CVE-2026-89160 Memory corruption in PCRE2

Low 3.7 Published 11 Sep 2026 Updated 15 Sep 2026

An out-of-bounds read in PCRE2 during invalid UTF matching can cause crashes or leak memory, affecting applications using the library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-89160?

CVE-2026-89160 is a low-severity memory corruption vulnerability in PCRE2, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PCRE2 before 10.48 has a pcre2_match out-of-bounds read during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject.

Weakness: CWE-125

Which versions are affected by CVE-2026-89160?

It affects 1 product.

Products include Pcre Pcre2.

How do I fix CVE-2026-89160?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-89160 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89160 exists.

Sources

Also known as ALPINE-CVE-2026-89160, AZL-100056, AZL-101745, AZL-101763, AZL-101787, AZL-101799 and 10 more.