MEDIUM 5.9 Microsoft

CVE-2026-0990

Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing

Microsoft Security Update 2026-Jan: Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing

Affected Products

cbl2 libxml2 2.10.4-9 on CBL Mariner 2.0
azl3 libxml2 2.11.5-7 on Azure Linux 3.0
azl3 libxml2 2.11.5-8 on Azure Linux 3.0
cbl2 libxml2 2.10.4-10 on CBL Mariner 2.0
azl3 libxml2 2.11.5-9 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0990
https://nvd.nist.gov/vuln/detail/CVE-2026-0990

Published: 2026-01-13 · Source: Microsoft · Feed updated: 2026-08-10

This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-01-13 via Microsoft. Affected: cbl2 libxml2 2.10.4-9 on CBL Mariner 2.0, azl3 libxml2 2.11.5-7 on Azure Linux 3.0, azl3 libxml2 2.11.5-8 on Azure Linux 3.0 and 2 more.

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