What is CVE-2026-93761?

CVE-2026-93761 is a high-severity vulnerability, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-09-18.

How severe is CVE-2026-93761?

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

CVE-2026-93761

CVE-2026-93761

An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a pattern-matching query condition on an embedded association may become unresponsive.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

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.

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

cna@mongodb.com

Frequently asked questions

What is CVE-2026-93761?: CVE-2026-93761 is a high-severity vulnerability, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-09-18.
How severe is CVE-2026-93761?: High severity. CVSS v3 base score is 7.5 out of 10.