All vulnerabilities
CVE-2026-103111GHSA-r9hj-j2rw-4q3m

PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.

PCRE PCRE2
Open in ThreatlineRecord JSON
CVSS
7.6High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 30 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.49Fixed versionCVE List
Published30 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Affected versions 2

  • PCRE2affected: all versions before 10.49CVE List
  • PCRE2<=10.48GitHub

References 2