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
Overview
- Severity
- Medium (CVSS 5.3)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Aug
- Released
- 2026-08-23
- EPSS Score
- 0.43% (percentile: 36.4%)
Affected Products (1)
Other
Revision History
- 2026-08-23: Information published.