CVE-2026-89160

A flaw was found in PCRE2, a library for processing regular expressions. A remote attacker could exploit this vulnerability by providing a specially crafted input that triggers an out-of-bounds read during pattern matching with invalid UTF (Unicode Transformation Format) characters. This could lead to a denial of service, making the affected system or application unavailable.

This flaw is rated as Low impact. A denial of service could occur in applications utilizing PCRE2 for regular expression matching if specially crafted invalid UTF input is processed. The high attack complexity required to trigger this out-of-bounds read limits its overall impact on Red Hat products.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.