What is CVE-2026-119300?

CVE-2026-119300 is a medium-severity vulnerability in Wekan, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2026-10-30.

How severe is CVE-2026-119300?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Wekan

CVE-2026-119300

Wekan is open source kanban built with Meteor. Prior to 11.11, the user-search publication in server/publications/users.js and the searchUsers method in server/models/users.js pass authenticated user-controlled searchTerm and query values to new RegExp() without escaping regular-expression metacharacters. MongoDB-backed deployments evaluate the resulting patterns with PCRE2, allowing a logged-in user to submit catastrophic-backtracking expressions that consume database CPU and degrade or deny service to other users; searchUsers additionally requires board membership or site-admin status. The FerretDB v1 / RE2 unaffected configuration is not practically affected by catastrophic backtracking. This issue is fixed in version 11.11.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

Published 2026-10-30 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/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.

Affected products

Wekan — versions < 11.11

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

Frequently asked questions

What is CVE-2026-119300?: CVE-2026-119300 is a medium-severity vulnerability in Wekan, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2026-10-30.
How severe is CVE-2026-119300?: Medium severity. CVSS v3 base score is 6.5 out of 10.