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CVE-2026-89157

7.4, high

PCRE2 Integer Overflow Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.4, high high CVSS v3.1
EPSS, next 30 days
0.3% higher than 18.9% of scored CVEs
Exploitation
Exploit code published
Published
11 Sept 2026a month ago

Description

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.

Details

Vendor
PCRE
Product
PCRE2
Weakness
CWE-190 (opens in a new tab)
Status
Analyzed
Updated
16 Sept 2026
Assigner
cve@mitre.org

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

References 2

Exploit code 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other PCRE CVEs

Every PCRE CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-89161 In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context EPSS 0.1% 7.8, high

Beyond this page

Is CVE-2026-89157 in your network?

This page tells you how dangerous CVE-2026-89157 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.