Out-of-bounds Read in Pcre Pcre2

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 class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Pcre Pcre2

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

Frequently asked questions

What is CVE-2026-89156?: CVE-2026-89156 is a low-severity vulnerability in Pcre Pcre2, classified under Out-of-bounds Read. CVSS score: 2.9/10. Published 2026-09-11.
How severe is CVE-2026-89156?: Low severity. CVSS v3 base score is 2.9 out of 10.