CVE-2026-63676

libyaml-perl vulnerability

CVE-2026-63676 is fixed in 3 products on 1 platform, first by libyaml-perl 1.30-1ubuntu0.20.04.1~esm1, released August 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
n/a

backtracking leading to exponential load time

Where it's fixed

ProductFixed inFixReleased
Linux
libyaml-perl · Debian 14 1.321-1 DEBIAN-CVE-2026-63676 Sep 3, 2026
libyaml-perl · Ubuntu 18.04.6 LTS (bionic) 1.24-1ubuntu0.1~esm1 libyaml-perl 1.24-1ubuntu0.1~esm1 Oct 16, 2026
libyaml-perl · Ubuntu 20.04 LTS (focal) 1.30-1ubuntu0.20.04.1~esm1 libyaml-perl 1.30-1ubuntu0.20.04.1~esm1 Aug 26, 2026
libyaml-perl · Ubuntu 22.04.1 LTS (jammy) 1.30-1ubuntu0.22.04.1 libyaml-perl 1.30-1ubuntu0.22.04.1 Aug 26, 2026
libyaml-perl · Ubuntu 24.04.5 LTS (noble) 1.31-1ubuntu0.24.04.1 libyaml-perl 1.31-1ubuntu0.24.04.1 Aug 26, 2026
libyaml-perl · Ubuntu 26.04.1 LTS (resolute) 1.31-1ubuntu0.26.04.1~esm1 libyaml-perl 1.31-1ubuntu0.26.04.1~esm1 Aug 26, 2026
perl-YAML · amzn 2023 1.31-7.amzn2023.0.2 ALAS2023-2026-2151 Sep 14, 2026
perl-YAML-tests · amzn 2023 1.31-7.amzn2023.0.2 ALAS2023-2026-2151 Sep 14, 2026

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