An update for perl is now available for openEuler-24.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-3932 Final 1.0 1.0 2026-09-20 Initial 2026-09-20 2026-09-20 openEuler SA Tool V1.0 2026-09-20 perl security update An update for perl is now available for openEuler-24.03-LTS-SP1 Perl 5 is a highly capable, feature-rich programming language with over 30 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large scale development projects. Security Fix(es): 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. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one recorded. A failing transition sets the failed flag, and a later successful transition does not clear it, so the prescan reads the stale flag as a failure and stops before it can record a candidate that starts earlier. It takes a subject where one candidate is recorded and a later character then forces a fallback through a fail link that succeeds. Example: "ABCDE" =~ m/ABCF|BCDE|C/; # matches C at offset 2, not BCDE "ABCDE" =~ m/ABCF|BCDE|C(G)/; # no match, BCDE missed An alternation like this can miss input it should match, or match it on the wrong branch, so an access or filtering decision made from the result can be wrong.(CVE-2026-19487) An update for perl is now available for openEuler-24.03-LTS-SP1. openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium perl https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3932 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-19487 https://nvd.nist.gov/vuln/detail/CVE-2026-19487 openEuler-24.03-LTS-SP1 perl-5.38.0-18.oe2403sp1.aarch64.rpm perl-debuginfo-5.38.0-18.oe2403sp1.aarch64.rpm perl-debugsource-5.38.0-18.oe2403sp1.aarch64.rpm perl-devel-5.38.0-18.oe2403sp1.aarch64.rpm perl-libs-5.38.0-18.oe2403sp1.aarch64.rpm perl-5.38.0-18.oe2403sp1.src.rpm perl-5.38.0-18.oe2403sp1.x86_64.rpm perl-debuginfo-5.38.0-18.oe2403sp1.x86_64.rpm perl-debugsource-5.38.0-18.oe2403sp1.x86_64.rpm perl-devel-5.38.0-18.oe2403sp1.x86_64.rpm perl-libs-5.38.0-18.oe2403sp1.x86_64.rpm perl-help-5.38.0-18.oe2403sp1.noarch.rpm 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. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one recorded. A failing transition sets the failed flag, and a later successful transition does not clear it, so the prescan reads the stale flag as a failure and stops before it can record a candidate that starts earlier. It takes a subject where one candidate is recorded and a later character then forces a fallback through a fail link that succeeds. Example: "ABCDE" =~ m/ABCF|BCDE|C/; # matches C at offset 2, not BCDE "ABCDE" =~ m/ABCF|BCDE|C(G)/; # no match, BCDE missed An alternation like this can miss input it should match, or match it on the wrong branch, so an access or filtering decision made from the result can be wrong. 2026-09-20 CVE-2026-19487 openEuler-24.03-LTS-SP1 Medium 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L perl security update 2026-09-20 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3932