What’s Vulnerable › Vulnerabilities

CVE-2026-89157

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-09-11 · updated 2026-09-16
• Weakness: CWE-190

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.

Affected products

• PCRE2: from 10.30 before 10.48; 10.48-rc1 — fixed in 10.48

How to fix

Upgrade to a fixed version: PCRE2 10.48. Check the vendor advisory for mitigations.

References

• https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48
• https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-q8g2-wprr-34m9
• https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-q8g2-wprr-34m9

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