CVE intelligence

CVE-2026-89157

Vulnerability intelligence

Published Sep 11, 2026Sources checked Sep 13, 2026

5.7MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-89157 and is rated Medium severity with a CVSS score of 5.7. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.1%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-89157?

PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.