PatchTheCVECVE-2026-25561: WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API
CVE-2026-25561 is a high-severity flaw (CVSS 7.5) affecting wekan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent card/board relationship, enabling attempts to upload attachments with mismatched object relationships.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 75%) |
| CISA exploited list | No |
| Weakness | CWE-863 |
| Published | 2026-02-07 |
| Last modified | 2026-07-14 |
Last updated 2026-07-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-25561?
wekan: upgrade to 8.19. Exact commands for each OS are on this page.
Is CVE-2026-25561 being exploited?
CVE-2026-25561 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-25561 affect?
CVE-2026-25561 affects wekan. Severity is high (CVSS 7.5). WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent
How urgent is CVE-2026-25561?
Priority 37/100. High severity; Remotely exploitable, no login, no user action
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