build/deps: upgrade libxml2 to v2.15.3 (CVE-2026-6732)#30392
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Fixes type confusion vulnerability in XSD validation with internal entity references. Upgrades from 2.15.2 to 2.15.3.
This was referenced May 6, 2026
dotnwat
approved these changes
May 12, 2026
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CI test resultstest results on build#84327
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Upgrades libxml2 from 2.15.2 to 2.15.3 to fix CVE-2026-6732 (type confusion vulnerability in XSD validation with internal entity references, CVSS 7.1 High). This branch uses libxml2 via the Bazel Central Registry which was published in bazelbuild/bazel-central-registry#8777. Backports to v26.1.x and v25.3.x are handled separately via vtools/S3.
Backports Required
Release Notes
Bug Fixes
FIXES=CORE-16201