CVE-2019-11831: debian debian_linux
Vulnerability summary
CVE-2019-11831 is a critical (CVSS 9.8) vulnerability in debian debian_linux. EPSS estimates a 5.44% chance of exploitation in the next 30 days, higher than 92.7% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 5% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 09-05-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
5.44%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
No change 0.00 pp
From 5.44% on 04-10-2026
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 cause- CWE-22Improper Limitation of a Pathname to a Restricted DirectoryThe product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- CWE-502Deserialization of Untrusted DataThe product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- drupal7< 7.52-2+deb9u9
- debian_linuxEOL8.0 | 9.0
Alpine1 product
- drupal7< 7.67-r0
Drupal1 product
- drupal≥ 7.0, < 7.67 | ≥ 8.6.0, < 8.6.16 | ≥ 8.7.0, < 8.7.1
Fedoraproject1 product
- fedoraEOL28 | 29 | 30
Joomla1 product
- joomla\!≥ 3.9.3, ≤ 3.9.5
Typo31 product
- pharstreamwrapper≥ 2.0.0, < 2.1.1 | ≥ 3.0.0, < 3.1.1
Ubuntu1 product
- drupal7All versions (No fix recorded)
7 vendors · 8 products
References
19 links- github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1X Refsource MISCRelease NotesThird Party AdvisoryREPORT
- github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1X Refsource MISCRelease NotesThird Party AdvisoryREPORT
Show all 19 references
- lists.debian.org/debian-lts-announce/2019/05/msg00029.htmlMailing ListX Refsource MLISTThird Party Advisory