Description
An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded attachments can be served with attacker-controlled Content-Type (text/html), allowing execution of attacker-supplied HTML/JS in the application's origin and enabling session/token theft and CSRF actions.
References (4)
Core 4
Core References
Product
https://github.com/wekan/wekan
Vendor Advisory
https://wekan.fi/hall-of-fame/spacebleed/
Scores
CVSS v3
8.1
EPSS
0.0003
EPSS Percentile
7.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (1)
wekan_project/wekan
< 8.16
Published
Dec 15, 2025
Tracked Since
Feb 18, 2026