CVE-2026-123519 Vikunja before 2.7.1 Memory Exhaustion DoS via WeKan and Vikunja-File Imports
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123519?
CVE-2026-123519 is a high-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026.
Official description
Vikunja before 2.7.1 contains a denial of service vulnerability that allows authenticated users to exhaust API process memory by uploading WeKan or vikunja-file imports with no item-count cap. Attackers can submit a ~22 MB WeKan JSON with hundreds of thousands of cards or duplicate IDs to the wekan migrate endpoint, triggering OOM and crashing the instance.
Weakness: CWE-770
Which versions are affected by CVE-2026-123519?
How do I fix CVE-2026-123519?
No fix has been published for CVE-2026-123519 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123519 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123519 exists.
Sources
Also known as GHSA-94xf-3vwp-m22j, GHSA-g2xc-jv9q-46wq.