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Deserialization of Untrusted Data The advisory has been revoked - it doesn't affect any version of package xstream.src  (opens in a new tab)

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EPSS
0.62% (70th percentile)

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  • Snyk IDSNYK-RHEL10-XSTREAMSRC-15340137
  • published25 Feb 2026
  • disclosed22 Aug 2021
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Introduced: 22 Aug 2021

CVE-2021-39145  (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 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.

References