{"id":"PYSEC-2025-259","details":"The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read vulnerability exists in the PCRE2 regular expression matching engine, specifically within the handling of the (*scs:...) (Scan SubString) verb when combined with (*ACCEPT) in src/pcre2_match.c. This vulnerability may potentially lead to information disclosure if the out-of-bounds data read during the memcmp affects the final match result in a way observable by the attacker. This issue has been resolved in version 10.46.","aliases":["CVE-2025-58050","GHSA-c2gv-xgf5-5cc2"],"modified":"2026-07-13T07:15:39.720370041Z","published":"2025-08-27T19:15:37.560Z","references":[{"type":"ADVISORY","url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46"},{"type":"FIX","url":"https://github.com/PCRE2Project/pcre2/commit/a141712e5967d448c7ce13090ab530c8e3d82254"},{"type":"EVIDENCE","url":"https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2"}],"affected":[{"package":{"name":"pcre2","ecosystem":"PyPI","purl":"pkg:pypi/pcre2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"10.45"}]}],"versions":["0.1.0","0.2.0","0.3.0","0.4.0","0.5.0","0.5.1","0.5.2","0.5.3","0.6.0","0.7.0"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/pcre2/PYSEC-2025-259.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}