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CVE-2026-119300— Wekan: ReDoS via Unescaped User Input in RegExp

Quick assessment

Affected
wekan wekan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wekan 是一款基于 Meteor 框架构建的开源看板工具。在 11.11 版本之前， 中的 发布函数以及 中的 方法，会将经过身份验证的用户可控的 和 参数直接传递给 ，而未对正则表达式元字符进行转义。对于使用 MongoDB 作为后端的部署环境，生成的正则模式会通过 PCRE2 引擎进行求值，这使得已登录用户可以提交导致“灾难性回溯”的正则表达式，从而耗尽数据库 CPU 资源，造成服务性能下降甚至拒绝服务（DoS）。其中， 方法还要求调用者具备看板成员身份或站点管理员权限。采用 FerretDB v1 或 R

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
wekan wekan < 11.11 affected
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I. Basic Information for CVE-2026-119300

Vulnerability Information
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Vulnerability Title
Wekan: ReDoS via Unescaped User Input in RegExp
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wekan wekan < 11.11 -

II. Public POCs for CVE-2026-119300

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III. Intelligence Information for CVE-2026-119300

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Patches & Fixes for CVE-2026-119300 (1)

Vendor Advisories for CVE-2026-119300 (1)

Vendor Pages for CVE-2026-119300 (1)

IV. Related Vulnerabilities

Same product: wekan
Same vendor: wekan
Same weakness: CWE-1333