TI-2025-40436 Aliases CVE-2025-65778 GHSA-9hv3-wvf3-ffmp

An issue was discovered in Wekan The Open Source kanban board system up to version 18.15…

LOW 37CWE-79Published 2025-12-15 · Updated 2025-12-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00379 32nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wekan_project:wekan::::::::	before 8.16	Vulnerable	wekan

cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:* Versions before 8.16 Vulnerable ·wekan

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-65778
2026-10-03 Alias added: GHSA-9hv3-wvf3-ffmp

References

Patch 1

https://github.com/wekan/wekan/commit/e9a727301d7b4f1689a703503df668c0f4f4cab8

Advisory 1

https://wekan.fi/hall-of-fame/spacebleed/

Other 2

TI-2026-01855 WeKan Activity Publication activities.js LinkedBoardActivitiesBleed information disclosure CVSS 4.0MEDIUM 6.9
TI-2023-13025 A stored cross-site scripting (Stored XSS) vulnerability in file preview in WeKan before… CVSS 3.1MEDIUM 5.4
TI-2026-20667 WeKan < 8.19 LDAP Authentication Filter Injection CVSS 4.0HIGH 8.7
TI-2026-23675 Wekan Exposes All Global Webhook Integrations through globalwebhooks Publication CVSS 4.0HIGH 8.7
TI-2026-23673 Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading CVSS 4.0CRITICAL 9.3
TI-2026-23672 Wekan has Cross-Board IDOR in Custom Fields Update Endpoints CVSS 4.0CRITICAL 9.3

See all 38 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences