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CVE-2026-89158: CWE-190 Integer Overflow or Wraparound in PCRE PCRE2

0
Medium
VulnerabilityCVE-2026-89158cvecve-2026-89158cwe-190
Published: 09/11/2026 (09/11/2026, 04:07:21 UTC)
Source: CVE Database V5
Vendor/Project: PCRE
Product: PCRE2

Description

CVE-2026-89158 is an integer overflow vulnerability in PCRE2 versions before 10.48 on 32-bit platforms. The flaw occurs in the pcre2_compile_32 function, leading to an out-of-bounds write. This vulnerability has a medium severity rating and a CVSS score of 6.5.

CVSS v3.1

Score 6.5medium

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

Affected software

PCRE

PCRE2

Affected versions
>=0 <10.48
GitHub Actionsmore threats →ai
pcre2project/pcre2
pkg:github/pcre2project/pcre2
Affected versions
>=0 <10.48

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/11/2026, 04:32:46 UTC

Technical Analysis

PCRE2 before version 10.48 on 32-bit platforms contains an integer overflow vulnerability in the pcre2_compile_32 function. This overflow can cause an out-of-bounds write, potentially leading to integrity impacts. The CVSS 3.1 base score is 6.5, with network attack vector, high attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and low availability impact.

Potential Impact

The vulnerability allows an attacker to cause an out-of-bounds write due to an integer overflow, which can impact the integrity of the affected system. There is no confidentiality or availability impact reported. Exploitation requires network access with high complexity and no privileges or user interaction.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor vendor communications for updates and apply patches once available.

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Technical Details

Data Version
5.2
Assigner Short Name
mitre
Date Reserved
2026-09-11T04:07:21.613Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6aa380d491cc7f3848a3b520

Added to database: 09/11/2026, 04:17:24 UTC

Last enriched: 09/11/2026, 04:32:46 UTC

Last updated: 09/11/2026, 04:39:58 UTC

Views: 6

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