CVE-2021-39145: debian debian_linux
Vulnerability summary
CVE-2021-39145 is a high (CVSS 8.5) vulnerability in debian debian_linux. EPSS estimates a 4.06% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 8 · Related 4Timeline
- 23-08-2021PublishedVulnerability first disclosed.
- 07-10-2026Last modifiedVulnerability information updated.
Description
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
CVSS metrics
7 scores · 6 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · MavenEcosystem advisory · calculated8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVDNIST8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
4.06%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.06% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-434Unrestricted Upload of File with Dangerous TypeThe product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
- CWE-502Deserialization of Untrusted DataThe product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected systems
Oracle11 products
- business_activity_monitoring12.2.1.4.0
- commerce_guided_search11.3.2
- communications_billing_and_revenue_management_elastic_charging_engine11.3 | 12.0
- communications_cloud_native_core_automated_test_suite1.9.0
- communications_cloud_native_core_binding_support_function1.10.0
Chainguard2 products
- hadoop-fips-3.3.6All versions (No fix recorded)
- hadoop-fips-3.4.2All versions (No fix recorded)
Debian2 products
- libxstream-java< 1.4.18-1
- debian_linuxEOL9.0 | 10.0 | 11.0
Com.thoughtworks.xstream1 product
- xstream< 1.4.18
Fedoraproject1 product
- fedoraEOL33 | 34 | 35
Netapp1 product
Ubuntu1 product
- libxstream-java< 1.4.11.1-1+deb10u4build0.18.04.1 | < 1.4.11.1-1ubuntu0.3
X-stream1 product
- xstream< 1.4.18
Xstream1 product
- xstream< 1.4.18
9 vendors · 21 products
References
21 links- github.com/x-stream/xstream/security/advisories/GHSA-8jrj-525p-826vX Refsource CONFIRMREPORTAdvisoryWEBThird Party Advisory
lists.debian.org/debian-lts-announce/2021/09/msg00017.htmlMailing ListX Refsource MLISTAdvisoryWEBThird Party Advisory- www.debian.org/security/2021/dsa-5004Vendor AdvisoryX Refsource DEBIANAdvisoryWEBThird Party Advisory
Show all 21 references
- github.com/x-stream/xstreamPACKAGE