CVE-2007-4767: Pcre

Medium severity, CVSS 5.0. EPSS: 5.1% chance of exploitation in the next 30 days.

Perl-Compatible Regular Expression (PCRE) library before 7.3 does not properly compute the length of (1) a \p sequence, (2) a \P sequence, or (3) a \P{x} sequence, which allows context-dependent attackers to cause a denial of service (infinite loop or crash) or execute arbitrary code.

Affected products

• Pcre Pcre: up to and including 6.0; up to and including 6.1; up to and including 7.3

Published 2007-11-07. Last modified 2026-06-16.