CVE-2021-29505

unknown
Published 2021-05-18 · Modified 2026-03-13
CVSS v3
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2
VIR risk

Description

XStream is software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types is affected. The vulnerability is patched in version 1.4.17.

Predictions

Exploit likelihood
30%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-29505

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-29505.html

OS impact

OSVersionStatusFixed in
suse slesaffected
debian debianbookwormfixed1.4.15-3
debian debianbullseyefixed1.4.15-3
debian debianforkyfixed1.4.15-3
debian debiansidfixed1.4.15-3
debian debiantrixiefixed1.4.15-3

Package impact

EcosystemPackageVulnerableFixed
java Mavencom.thoughtworks.xstream:xstream<1.4.171.4.17

References

Verify integrity in audit chain (admin only). AS-IS.