CVE-2026-89161

HIGH
Published Sep 11, 2026 Modified Sep 16, 2026 CWE-590

Description

In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.

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CVSS v3.1 Score

7.4
HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0011
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-590 CWE-590

Affected Products

Vendor Product
pcre pcre2
pcre pcre2

References

Frequently Asked Questions

What is CVE-2026-89161? +
In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur. It has a CVSS v3.1 base score of 7.4 (HIGH).
How severe is CVE-2026-89161? +
CVE-2026-89161 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0011, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-89161? +
CVE-2026-89161 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-2026-89161? +
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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