Critical severity · published Feb 5, 2026
CVE-2026-1963
WeKan Attachment Storage attachments.js MoveStorageBleed access control
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
A vulnerability was found in WeKan up to 8.20. This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely. Upgrading to version 8.21 mitigates this issue. The patch is identified as c413a7e860bc4d93fe2adcf82516228570bf382d. Upgrading the affected component is advised.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
WeKan ·
8.0; 8.1; 8.2; 8.3; 8.4; 8.5; +15 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1963
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1963
Product
https://github.com/wekan/wekan/
Patch
https://github.com/wekan/wekan/commit/c413a7e860bc4d93fe2adcf82516228570bf382d
Product
https://github.com/wekan/wekan/releases/tag/v8.21
Permissions Required
https://vuldb.com/?ctiid.344485
Third Party Advisory
https://vuldb.com/?id.344485
Third Party Advisory
https://vuldb.com/?submit.742678
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