A libxml-security-java security update has been released for Debian GNU/Linux 10 and 11.

DSA 5010-1: libxml-security-java security update

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Debian Security Advisory DSA-5010-1 security@debian.org
  https://www.debian.org/security/ Markus Koschany
November 15, 2021   https://www.debian.org/security/faq
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Package : libxml-security-java
CVE ID : CVE-2021-40690
Debian Bug : 994569

Apache Santuario - XML Security for Java is vulnerable to an issue where the
"secureValidation" property is not passed correctly when creating a KeyInfo
from a KeyInfoReference element. This allows an attacker to abuse an XPath
Transform to extract any local .xml files in a RetrievalMethod element.

For the oldstable distribution (buster), this problem has been fixed
in version 2.0.10-2+deb10u1.

For the stable distribution (bullseye), this problem has been fixed in
version 2.0.10-2+deb11u1.

We recommend that you upgrade your libxml-security-java packages.

For the detailed security status of libxml-security-java please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/libxml-security-java

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/