Overview
What is CVE-2026-89156?
PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
Vulnerability intelligence
CVE-2026-89156 and is rated Low severity with a CVSS score of 2.9. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.