Description
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.
Metrics
CVSS 3.1 9.1/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| PCRE2Project | pcre2 | = 10.45 |
References
- https://github.com/PCRE2Project/pcre2/commit/a141712e5967d448c7ce13090ab530c8e3d82254Patch
- https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46Release Notes
- https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2Exploit, Vendor Advisory
- https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2Exploit, Vendor Advisory
Timeline
- Published
- Aug 27, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed