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Deserialization of Untrusted Data The advisory has been revoked - it doesn't affect any version of package xstream.src  (opens in a new tab)

Threat Intelligence

Exploit Maturity
Attacked
EPSS
94.26% (100th percentile)

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  • Snyk IDSNYK-RHEL10-XSTREAMSRC-15340130
  • published25 Feb 2026
  • disclosed22 Aug 2021
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Introduced: 22 Aug 2021

CVE-2021-39144  (opens in a new tab)
CWE-502  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xstream.src package and not the xstream.src package as distributed by RHEL.

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the 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.

References