CVE-2026-1962
Published: 05 February 2026
Summary
CVE-2026-1962 is a medium-severity Incorrect Privilege Assignment (CWE-266) vulnerability in Wekan Project Wekan. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 23.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and AC-6 (Least Privilege).
Deeper analysis
CVE-2026-1962 is an improper access control vulnerability (CWE-266, CWE-284) in WeKan open-source kanban software versions up to 8.20. The issue resides in an unknown function within the server/attachmentMigration.js file of the Attachment Migration component. It carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and was published on 2026-02-05.
An attacker with low privileges can exploit this vulnerability remotely without user interaction. Successful manipulation of the affected function enables limited impacts on confidentiality, integrity, and availability, potentially allowing unauthorized access or modifications within the Attachment Migration functionality.
Advisories recommend upgrading to WeKan version 8.21, which includes the fixing commit 053bf1dfb76ef230db162c64a6ed50ebedf67eee. Relevant resources are available at the WeKan GitHub repository, the specific patch commit, the v8.21 release tag, and VulDB entries for ctiid.344484 and id.344484.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5527
Vulnerability details
A vulnerability has been found in WeKan up to 8.20. The impacted element is an unknown function of the file server/attachmentMigration.js of the component Attachment Migration. The manipulation leads to improper access controls. The attack may be initiated remotely. Upgrading…
more
to version 8.21 is sufficient to resolve this issue. The identifier of the patch is 053bf1dfb76ef230db162c64a6ed50ebedf67eee. It is recommended to upgrade the affected component.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper access control in public-facing WeKan web app enables remote exploitation with limited C/I/A impact via attachment migration component.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces approved authorizations on the attachmentMigration function, blocking the unauthorized access the CVE permits.
Limits privileges on the Attachment Migration component so low-privileged remote users cannot reach the improperly controlled function.
Requires prompt application of the vendor patch (v8.21 / commit 053bf1df) that corrects the access-control flaw.