Vulnerability · Published Feb 8, 2026 · Assigned by VulDB

CVE-2026-2207WeKan Activity Publication activities.js LinkedBoardActivitiesBleed information disclosure

Medium 5.3

In plain English

A medium-severity information exposure in WeKan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 64.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in WeKan up to 8.20. This issue affects some unknown processing of the file server/publications/activities.js of the component Activity Publication Handler. Executing a manipulation can lead to information disclosure. It is possible to launch the attack remotely. Upgrading to version 8.21 is capable of addressing this issue. This patch is called 91a936e07d2976d4246dfe834281c3aaa87f9503. You should upgrade the affected component.

Affected products (as reported)

Vendor	Product	Versions
n/a	WeKan	8.08.18.28.38.48.58.68.7

Weakness: CWE-200, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C

References

VDB-344921 | WeKan Activity Publication activities.js LinkedBoardActivitiesBleed information disclosure vdb-entry, technical-description
VDB-344921 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #752163 | Wekan <8.21 Information disclosure via insufficient authorization filtering third-party-advisory
https://github.com/wekan/wekan/commit/91a936e07d2976d4246dfe834281c3aaa87f9503 patch
https://github.com/wekan/wekan/releases/tag/v8.21 patch
https://github.com/wekan/wekan/ product