CVE-2026-123525 Vikunja before 2.7.1 Memory Exhaustion DoS via Trello, Todoist and Microsoft To Do Migrations
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123525?
CVE-2026-123525 is a high-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026.
Official description
Vikunja before 2.7.1 allocates memory without limits in its Trello, Todoist and Microsoft To Do migration importers, which buffer remote attachment downloads and API responses in memory without size caps. Authenticated users can start a migration that references huge attacker-served attachments or yields oversized API responses, exhausting memory and crashing the shared API process for all tenants.
Weakness: CWE-770
Which versions are affected by CVE-2026-123525?
How do I fix CVE-2026-123525?
No fix has been published for CVE-2026-123525 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123525 being exploited?
There is no known exploitation of CVE-2026-123525 in the wild and no public exploit code.
Sources
Also known as GHSA-7g8v-77fp-g6gv, GHSA-wqjr-22r7-5437.