Memory Handling Flaw in PCRE2 Affects String Processing
CVE-2026-89161

7.4HIGH

Key Information:

Vendor

Pcre

Status
Pcre2
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89161?

A vulnerability in PCRE2, prior to version 10.48, arises from improper handling of previously copied subjects in the pcre2_jit_match function. This flaw may result in an incorrect memory free operation, leading to potential instability or security risks during string processing operations. It is essential for users to update to the latest version to mitigate potential threats.

Affected Version(s)

PCRE2 0 < 10.48

References

https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-...
https://github.com/PCRE2Project/pcre2/pull/937

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.