CVE-2026-89157

MEDIUM
Published Sep 11, 2026 Modified Sep 16, 2026 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.

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CVSS v3.1 Score

5.7
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

EPSS — Exploit Prediction

0.0010
Probability of exploitation
0.01%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor Product
pcre pcre2
pcre pcre2

References

Frequently Asked Questions

What is CVE-2026-89157? +
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. It has a CVSS v3.1 base score of 5.7 (MEDIUM).
How severe is CVE-2026-89157? +
CVE-2026-89157 has a CVSS v3.1 score of 5.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0010, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-89157? +
CVE-2026-89157 affects products from pcre, specifically: pcre2. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-89157? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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