SUSE-SU-2026:20665-1: python311-core&distro=SUSE Linux Micro 6.1 SUSE Linux Enterprise
Published
Published 10-03-2026Last modified 23-03-2026
Vulnerability summary
SUSE-SU-2026:20665-1 is a vulnerability in python311-core&distro=SUSE Linux Micro 6.1 SUSE Linux Enterprise with no CVSS score yet.
Priority
Insufficient evidence
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?CVSS score
Not scored
010
No CVSS score recordedEPSS scoreNot scoredRisk metrics not yet published.
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 7 · Downstream 0 · Related 7Timeline
- 10-03-2026PublishedVulnerability first disclosed.
- 23-03-2026Last modifiedVulnerability information updated.
Description
Security update for python311 This update for python311 fixes the following issues: - CVE-2025-11468: preserving parens when folding comments in email headers. (bsc#1257029) - CVE-2026-0672: rejects control characters in http cookies. (bsc#1257031) - CVE-2026-0865: rejecting control characters in wsgiref.headers.Headers, which could be abused for injecting false HTTP headers. (bsc#1257042) - CVE-2025-15366: basically the same as the previous patch for IMAP protocol. (bsc#1257044) - CVE-2025-15282: basically the same as the previous patch for urllib library. (bsc#1257046) - CVE-2025-15367: basically the same as the previous patch for poplib library. (bsc#1257041) - CVE-2025-12781: fix decoding with non-standard Base64 alphabet (bsc#1257108)
CVSS metrics
Risk metrics not yet published.
EPSS trend
No EPSS score has been published for this record yet.
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Version check
Known conditions: not stated in public data.
Suse2 products
- python311-core&distro=SUSE Linux Micro 6.1< 3.11.14-slfo.1.1_3.1
- python311&distro=SUSE Linux Micro 6.1< 3.11.14-slfo.1.1_3.1
1 vendor · 2 products
References
15 linksRelated vulnerabilities
Insufficient evidenceSUSE-SU-2026:24280-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
- CVE-2026-15310: memory exhaustion in zipfile in bzip2/LZMA/Zstandard decompression (bsc#1277111).
- CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another scheme (bsc#1276223).
- CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226).
- CVE-2026-19445: reassigned SNI callbacks with unreferenced SSLContext instances can cause use-after-free
(bsc#1283969).
- CVE-2026-19553: omitted server_hostname arguments in wrap_bio() can cause silent hostname verification bypasses
(bsc#1283826).
- CVE-2026-19672: tarfile extraction filter bypass allows creation of directories outside the destination (bsc#1276227).
- CVE-2026-82049: tarfile extraction filters mishandle archives containing a hard link to a symbolic link, allowing file
modification and content disclosure (bsc#1280459).
Changes for python311:
- Update to 3.11.17:
- Security
- gh-158446: Fix a crash or incorrect output that could occur
when formatting a float or complex with a precision close
to the platform's INT_MAX. PyOS_double_to_string() now
raises ValueError for any precision of that magnitude,
regardless of presentation type or value, as the format
string parsers already did for precisions above INT_MAX.
- gh-157190: Fixed a vulnerability in the tarfile data and
tar extraction filters where a crafted archive using a hard
link to a symbolic link could change the permissions and
modification time of a file outside the destination
directory, and expose its contents inside the extracted
tree. This addresses CVE 2026-82049. (bsc#1280459,
CVE-2026-82049)
- gh-156793: asyncio: loop.start_tls() and
loop.create_connection() now validate the server_hostname
argument if an ssl.SSLContext is passed with check_hostname
set to True, emitting DeprecationWarning if server_hostname
is missing. (This will raise ValueError in Python 3.13 and
later.) (bsc#1283826, CVE-2026-19553)
- gh-156793: ssl.SSLContext.wrap_bio() now validates its
server_side, server_hostname and session arguments similar
to ssl.SSLContext.wrap_socket(), but for backward
compatiblity reasons emits DeprecationWarning instead of
ValueError.
In particular, a context with check_hostname enabled and no
server_hostname passed to wrap_bio() now emits
DeprecationWarning to indicate the hostname wasn't
checked. (In Python 3.13 and later, this raises
ValueError.)
- gh-157265: In tarfile, when extracting a link falls back to
extracting a member of the archive, skip the member when
the filter function returns None when called with the
extracted member's name replaced with the link's.
- gh-157953: Update bundled libexpat to version 2.8.5.
- gh-156002: Bound the amount of data zipfile decompresses
per read for members compressed with bzip2, LZMA, or
Zstandard, matching the existing limit for deflate. A small
archive member could previously expand into an unbounded
allocation even when read in small chunks. (bsc#1277111,
CVE-2026-15310)
- gh-155999: Fix the tarfile tar and data extraction filters
creating directories outside the destination for members
whose name leaves the destination and returns to it, such
as ../evil/../dest/sub/file. The containment check used the
resolved path, but intermediate directories were created
from the name as given. (bsc#1276227, CVE-2026-19672)
- gh-156293: Fix a crash in ssl when an sni_callback switches
a connection to another SSLContext and the context that
carries the callback is no longer referenced by the
application. Servers that keep their sni_callback context
alive (the usual case when it wraps the listening socket or
is stored on the server object) were not affected. This
addresses CVE-2026-19445. (bsc#1283969, CVE-2026-19445)
- gh-155292: Change the stringprep module and encodings.idna
codec to not consider Unicode codepoint attributes beyond
those defined in RFC 3454. (bsc#1276226, CVE-2026-17084)
- gh-155694: Fix CVE-2026-15806 by scoping HTTPPasswordMgr
credentials to the URL scheme, preventing credentials
stored for an HTTPS URL from being used for a matching HTTP
URL, while URIs without a scheme continue to match any
scheme. (bsc#1276223, CVE-2026-15806)
- Library
- gh-156002: zipfile again reads members through a
third-party decompressor installed by monkey-patching the
private _get_decompressor() to return an object that only
implements old BZ2Decompressor API from Python 3.3. Note
that decompressors without needs_input and two-argument
decompress() are vulnerable to CVE 2026-15310.
- gh-156353: Fix configparser parsing when using whitespace
in delimiters.
- Build
- gh-155757: Set the --argv0 argument to wasmtime for WASI
builds so the test suite passes. Otherwise the calculated
paths to the stdlib for frozen modules is incorrect.
- CVE-2026-15310: bound zipfile decompression for
bzip2/LZMA (bsc#1277111, gh#python/cpython#156002)
- CVE-2026-19672: in tarfile, handle a member that leaves the
destination and comes back (bsc#1276227, gh#python/cpython#156000)CVSSUnscoredInsufficient evidenceSUSE-SU-2026:23743-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
- CVE-2025-13462: incorrect parsing of TarInfo header when GNU long name and type AREGTYPE are combined (bsc#1259611).
- CVE-2026-0864: improper handling of line-ending characters can lead to configuration file injection when the
`configparser` module is used (bsc#1269066).
- CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
- CVE-2026-2297: cpython: incorrectly handled hook in FileLoader can lead to validation bypass (bsc#1259240).
- CVE-2026-3276: quadratic complexity in `unicodedata.normalize()` can lead to DoS when processing specially crafted
Unicode input (bsc#1267581).
- CVE-2026-3644: incomplete control character validation in http.cookies (bsc#1259734).
- CVE-2026-4224: C stack overflow when parsing XML with deeply nested DTD content models (bsc#1259735).
- CVE-2026-4360: in the Tarfile.extract() function, the filter parameter is not passed properly when extracting
hardlinks (bsc#1269959).
- CVE-2026-4519: leading dashes in URLs are accepted by the `webbrowser.open()` API and allow for web browser command
line option injection (bsc#1260026).
- CVE-2026-4786: Incomplete mitigation of %action expansion for command injection to webbrowser.open() (bsc#1262319).
- CVE-2026-6100: Arbitrary code execution or information disclosure via use-after-free in decompression modules
(bsc#1262098).
- CVE-2026-7210: `xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding
protection (bsc#1264962).
- CVE-2026-7774: `tarfile.data_filter` path traversal bypass allows writing outside the extraction directory
(bsc#1267821).
- CVE-2026-8328: `ftpcp()` does not use actual peer address and trusts server-supplied PASV host address (bsc#1265268).
- CVE-2026-9669: crafted input can cause a stack buffer overflow (bsc#1267974).
- CVE-2026-11940: tarfile extraction filter bypass via a crafted archive allows escaping the destination directory and
enables arbitrary file reads and writes (bsc#1268977).
- CVE-2026-11972: infinite loop due to improper EOF handling in the tarfile module streaming mode can lead to DoS
(bsc#1269788).
- CVE-2026-15308: Incremental HTMLParser allows CPU-exhaustion DoS via repeated unterminated markup declarations
(bsc#1271192).
- CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another
scheme (bsc#1276223).
- CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226).
Changes for python311:
- Update to 3.11.16:
- Build
- gh-153438: Update Windows build and installer tooling and
documentation to use the current download URL for
nuget.exe.
- Library
- gh-109638: Fix exponential time in csv.Sniffer.sniff() for
a sample which contains many quote characters. A doubled
quote character is now also detected in a field which
contains the delimiter or a line break.
- gh-98820: Fix quadratic time in csv.Sniffer.sniff() for
a sample which contains quoted fields, in particular for
a single column of quoted fields.
- gh-149231: In tomllib, the number of parts in TOML keys is
now limited.
- gh-146083: Update bundled libexpat to version 2.7.5.
- gh-141707: Don't change tarfile.TarInfo type from AREGTYPE
to DIRTYPE when parsing GNU long name or link headers
(bsc#1259611, CVE-2025-13462).
- gh-90949: Add
SetBillionLaughsAttackProtectionActivationThreshold() and
SetBillionLaughsAttackProtectionMaximumAmplification() to
xmlparser objects to tune protections against billion
laughs attacks. Patch by B�n�dikt Tran.
- gh-100372: ssl.SSLContext.load_verify_locations() no longer
incorrectly accepts some cases of trailing data when
parsing DER.
- Security
- gh-155558: Update bundled libexpat to version 2.8.3 for the
fix to CVE-2026-72522.
- gh-153030: Fixed quadratic complexity in incremental
parsing of long unterminated constructs (such as tags or
comments) in html.parser.HTMLParser, which could be
exploited for a denial of service (bsc#1271192,
CVE-2026-15308).
- gh-152674: The xml.etree.ElementTree.Element methods
findall(), iterfind() and find() avoid quadratic behavior
when using XPath index predicates ([1], [last()],
[last()-N]) on XML documents with many same-tag siblings.
- gh-152216: Update bundled libexpat to version 2.8.2.
- gh-151987: The tarfile.TarFile.extract() method now applies
the given filter when it extracts a link target from the
archive as a fallback (bsc#1269959, CVE-2026-4360).
- gh-151981: In tarfile, seeking a stream now stops when end
of the stream is reached (bsc#1269788, CVE-2026-11972).
- gh-151544: Modules/Setup.local is no longer used as
a landmark to discover whether Python is running in
a source tree, as it could potentially affect actual
installs. The pybuilddir.txt file is now the sole indicator
of running in a source tree.
- gh-151558: Fixed an vulnerability in the tarfile data and
tar extraction filters where crafted archives could create
a symlink pointing outside the destination directory. This
was a bypass of CVE-2025-4330 (bsc#1268977,
CVE-2026-11940).
- gh-150599: Fix a possible stack buffer overflow in bz2 when
a bz2.BZ2Decompressor is reused after a decompression
error. The decompressor now becomes unusable after libbz2
reports an error (bsc#1267974, CVE-2026-9669).
- gh-150743: http.client now limits the number of
chunked-response trailer lines it will read to 100, and the
number of interim (1xx) responses it will skip to 100.
A malicious or broken server could previously stream
trailer lines or 100 Continue responses forever, hanging
the client even when a socket timeout was in use. Reported
by @YLChen-007 via GHSA-w4q2-g22w-6fr4.
- gh-149698: Update bundled libexpat to version 2.8.1 for the
fix for CVE-2026-45186.
- gh-87451: The ftplib module's undocumented ftpcp function
no longer trusts the IPv4 address value returned from the
source server in response to the PASV command by default,
completing the fix for CVE-2021-4189. As with ftplib.FTP,
the former behavior can be re-enabled by setting the
trust_server_pasv_ipv4_address attribute on the source
ftplib.FTP instance to True. Thanks to Qi Deng at Aurascape
AI for the report (bsc#1265268, CVE-2026-8328).
- gh-149486: tarfile.data_filter() now validates link targets
using the same normalised value that is written to disk,
strips trailing separators from the member name when
resolving a symlink's directory, and rejects link members
that would replace the destination directory itself. This
closes several path-traversal bypasses of the data
extraction filter (bsc#1267821, CVE-2026-7774).
- gh-149079: Fix a potential denial of service in
unicodedata.normalize(). The canonical ordering step of
Unicode normalization used a quadratic-time insertion sort
for reordering combining characters, which could be
exploited with crafted input containing many combining
characters in non-canonical order. Replaced with
a linear-time counting sort for long runs (bsc#1267581,
CVE-2026-3276).
- gh-149018: Improved protection against XML hash-flooding
attacks in xml.parsers.expat and xml.etree.ElementTree when
Python is compiled with libExpat 2.8.0 or later
(bsc#1264962, CVE-2026-7210).
- gh-149017: Update bundled libexpat to version 2.8.0.
- gh-148808: Added buffer boundary check when using nbytes
parameter with
asyncio.AbstractEventLoop.sock_recvfrom_into(). Only
relevant for Windows and the asyncio.ProactorEventLoop.
- gh-148395: Fix a dangling input pointer in
lzma.LZMADecompressor, and bz2.BZ2Decompressor when memory
allocation fails with MemoryError, which could let
a subsequent decompress() call read or write through
a stale pointer to the already-released caller buffer
(bsc#1262098, CVE-2026-6100).
- gh-148169: A bypass in webbrowser allowed URLs prefixed
with %action to pass the dash-prefix safety check
(bsc#1262319, CVE-2026-4786).
- gh-146581: Fix vulnerability in shutil.unpack_archive() for
ZIP files on Windows which allowed to write files outside
of the destination tree if the patch in the archive
contains a Windows drive prefix. Now such invalid paths
will be skipped. Files containing ".." in the name (like
"foo..bar") are no longer skipped.
- gh-146333: Fix quadratic backtracking in
configparser.RawConfigParser option parsing regexes (OPTCRE
and OPTCRE_NV). A crafted configuration line with many
whitespace characters could cause excessive CPU usage.
- gh-146211: Reject CR/LF characters in tunnel request
headers for the HTTPConnection.set_tunnel() method
(bsc#1261969, CVE-2026-1502).
- gh-145986: xml.parsers.expat: Fixed a crash caused by
unbounded C recursion when converting deeply nested XML
content models with ElementDeclHandler(). This addresses
CVE-2026-4224 (bsc#1259735, CVE-2026-4224).
- gh-145599: Reject control characters in http.cookies.Morsel
update() and js_output(). This addresses CVE-2026-3644
(bsc#1259734, CVE-2026-3644).
- gh-145506: Fixes CVE-2026-2297 by ensuring that
SourcelessFileLoader uses io.open_code() when opening .pyc
files (bsc#1259240, CVE-2026-2297).
- gh-144370: Disallow usage of control characters in status
in wsgiref.handlers to prevent HTTP header injections.
Patch by Benedikt Johannes.
- gh-143930: Reject leading dashes in URLs passed to
webbrowser.open() (bsc#1260026, CVE-2026-4519).
- gh-143927: Normalize all line endings (CR, CRLF, and LF) to
LF+TAB when writing multi-line configparser values
(bsc#1269066, CVE-2026-0864).
- Tests
- gh-149776: Fix test_socket on Linux kernel 7.1 and newer:
skip UDP Lite tests if it's not supported. Patch by Victor
Stinner.CVSSUnscoredInsufficient evidenceSUSE-SU-2026:23191-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
Security issues fixed:
- CVE-2026-0864: improper handling of line-ending characters can lead to configuration file injection when the
`configparser` module is used (bsc#1269066).
- CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
- CVE-2026-3276: quadratic complexity in `unicodedata.normalize()` can lead to DoS when processing specially crafted
Unicode input (bsc#1267581).
- CVE-2026-4360: in the Tarfile.extract() function, the filter parameter is not passed properly when extracting
hardlinks (bsc#1269959).
- CVE-2026-4786: Incomplete mitigation of %action expansion for command injection to webbrowser.open() (bsc#1262319).
- CVE-2026-6019: BaseCookie.js_output() does not neutralize embedded characters (bsc#1262654).
- CVE-2026-6100: Arbitrary code execution or information disclosure via use-after-free in decompression modules
(bsc#1262098).
- CVE-2026-7210: `xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding
protection (bsc#1264962).
- CVE-2026-7774: `tarfile.data_filter` path traversal bypass allows writing outside the extraction directory
(bsc#1267821).
- CVE-2026-8328: `ftpcp()` does not use actual peer address and trusts server-supplied PASV host address (bsc#1265268).
- CVE-2026-11940: tarfile extraction filter bypass via a crafted archive allows escaping the destination directory and
enables arbitrary file reads and writes (bsc#1268977).
- CVE-2026-11972: infinite loop due to improper EOF handling in the tarfile module streaming mode can lead to DoS
(bsc#1269788).
- CVE-2026-15308: Incremental HTMLParser allows CPU-exhaustion DoS via repeated unterminated markup declarations
(bsc#1271192).
Non security issues fixed:
- Regression in `http.cookies` (bsc#1263083).
- udplite was removed -> python fails in tests (bsc#1268375).
- Conflicts between different versions of Python (bsc#1258364).CVSSUnscoredInsufficient evidenceSUSE-SU-2026:21254-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
- CVE-2025-13462: incorrect parsing of TarInfo when GNU long name and type AREGTYPE are combined can lead to
misinterpretation of tar archives (bsc#1259611).
- CVE-2026-3479: improper resource argument validation in `pkgutil.get_data()` can lead to path traversal (bsc#1259989).
- CVE-2026-3644: incomplete control character validation in http.cookies can lead to input validation bypass
(bsc#1259734).
- CVE-2026-4224: parsing XML with deeply nested DTD content models can lead to C stack overflow (bsc#1259735).
- CVE-2026-4519: failure to sanitize leading dashes in URLs in the `webbrowser.open()` API can lead to web browser
command line option injection (bsc#1260026).CVSSUnscoredInsufficient evidenceSUSE-SU-2026:20951-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
- CVE-2026-1299: header injection when an email is serialized due to improper newline quoting (bsc#1257181).
- CVE-2026-2297: validation bypass via incorrectly handled hook in FileLoader (bsc#1259240).CVSSUnscoredInsufficient evidenceSUSE-SU-2026:20768-1SUSE Linux Enterprisesuse · python311-core&distro=SUSE Linux Micro 6.1 +1 moresuse python311-core&distro=SUSE Linux Micro 6.1Security update for python311
This update for python311 fixes the following issues:
Updated to Python 3.11.15:
- CVE-2025-6075: quadratic complexity in os.path.expandvars() (bsc#1252974).
- CVE-2025-11468: header injection with carefully crafted inputs (bsc#1257029).
- CVE-2025-12084: quadratic complexity in xml.minidom node ID cache clearing (bsc#1254997).
- CVE-2025-13836: potential memory denial of service in the http.client module (bsc#1254400).
- CVE-2025-13837: potential memory denial of service in the plistlib module (bsc#1254401).
- CVE-2025-15282: control characters in URL media types data (bsc#1257046).
- CVE-2026-0672: control characters in http.cookies.Morsel fields and values (bsc#1257031).
- CVE-2026-0865: C0 control characters within wsgiref.headers.Headers fields, values, and parameters (bsc#1257042).CVSSUnscored