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Microsoft Security Response CenterCVE-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

Mariner

Read the vendor bulletin Get alerts for azl3 perl 5.38.2-514 on Azure Linux
5.3CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 perl 5.38.2-514 on Azure Linux 3.0

Versions the vendor lists as fixed

  • 5.38.2-516
Next step

What the vendor recommends

CBL-Mariner Releases

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-19487View CVSS, KEV, EPSS, and threat context
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