VulnerabilityUndergoing Analysis

CVE-2026-89161

In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context.

HIGH 7.4EPSS 0.11%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.4 HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.11% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-590
Source: cve@mitre.org

References

https://github.com/PCRE2Project/pcre2/pull/937
https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.