In PCRE2 before 10.48, pcre2serializeencode might disclose two bytes to an adversary, typically in a situation where the access available to the adversary is already unsafe.

In PCRE2 before 10.48, pcre2jitmatch mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.

PCRE2 before 10.48 has a pcre2match out-of-bounds read during the PCRE2MATCHINVALIDUTF matching of an invalid UTF subject.

PCRE2 before 10.48, on 32-bit platforms, has a pcre2compile32 integer overflow and resultant out-of-bounds write.

PCRE2 before 10.48, on 32-bit platforms, has a pcre2patternconvert out-of-bounds write when an attacker can provide a large pattern.

PCRE2 before 10.48 has a pcre2match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.