CVE-2026-89157

pcre2: PCRE2: Out-of-bounds write via large pattern input

Published Sep 11, 2026 CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8974-1 PCRE2 vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*
Type Values Removed Values Added
Title Out-of-Bounds Write in pcre2_pattern_convert on 32‑bit PCRE2 pcre2: PCRE2: Out-of-bounds write via large pattern input
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Title Out-of-Bounds Write in pcre2_pattern_convert on 32‑bit PCRE2
Type Values Removed Values Added
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.
First Time appeared Pcre
Pcre pcre2
Weaknesses CWE-190
CPEs cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*
Vendors & Products Pcre
Pcre pcre2
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 11, 2026, 4:02 PM
Reserved
Sep 11, 2026, 4:05 AM
Status
Analyzed
Published
Sep 11, 2026, 4:18 AM
Modified
Sep 16, 2026, 7:25 PM
Severity
Moderate
Public date
Sep 11, 2026, 4:05 AM