---
id: CVE-2026-119300
title: 'Wekan: ReDoS via Unescaped User Input in RegExp'
summary: >-
  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
  value…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-1333
vendor: wekan
product: wekan
affected:
  - wekan < 11.11
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-04T23:00:38.538587Z'
exploitAvailable: true
published: '2026-10-30'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T23:01:02.327Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119300'
references:
  - url: 'https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5'
    label: 'https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5'
  - url: >-
      https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec
    label: >-
      https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec
  - url: 'https://github.com/wekan/wekan/releases/tag/v11.11'
    label: 'https://github.com/wekan/wekan/releases/tag/v11.11'
tags:
  - cve.org
  - exploit-available
epss: 0.00295
epssPercentile: 0.22282
ingestedAt: '2026-11-05T21:36:00.668Z'
---

## Overview

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.

## Affected

- `wekan < 11.11`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.