MEDIUM 5.3 Microsoft
CVE-2026-19487
Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in S_find_byclass
Microsoft Security Update 2026-Aug: Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in S_find_byclass
Affected Products
- azl3 perl 5.38.2-514 on Azure Linux 3.0
- azl3 perl 5.38.2-516 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19487
- https://nvd.nist.gov/vuln/detail/CVE-2026-19487
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-11 via Microsoft. Affected: azl3 perl 5.38.2-514 on Azure Linux 3.0, azl3 perl 5.38.2-516 on Azure Linux 3.0.
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