What is CVE-2026-67989?

CVE-2026-67989 is a high-severity vulnerability in N/a, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-10-02.

How severe is CVE-2026-67989?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in N/a

CVE-2026-67989

crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains a polynomial-time regular expression denial-of-service condition in Mistral model capability matching on Ruby 3.1.x

Vulnerability class: ReDoS (Regular Expression Denial of Service)

Published 2026-10-02 · last modified 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

Frequently asked questions

What is CVE-2026-67989?: CVE-2026-67989 is a high-severity vulnerability in N/a, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-10-02.
How severe is CVE-2026-67989?: High severity. CVSS v3 base score is 7.5 out of 10.