VulnerabilityAnalyzed

CVE-2025-65778

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.

HIGH 8.1EPSS 0.38%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS: 0.38% probability · 31th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: wekan project/wekan
Source: cve@mitre.org

References

https://github.com/wekan/wekanProduct
https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--releaseRelease Notes
https://github.com/wekan/wekan/commit/e9a727301d7b4f1689a703503df668c0f4f4cab8Patch
https://wekan.fi/hall-of-fame/spacebleed/Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.