Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the addRepeatIntervalToTime function uses an O(n) loop that advances a date by the task's RepeatAfter duration until it exceeds the current time. By creating a repeating task with a 1-second interval and a due date far in the past, an attacker triggers billions of loop iterations, consuming CPU and holding a database connection for minutes per request. This vulnerability is fixed in 2.3.0.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481b Patch
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · vikunjaNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
References 4
- https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481b Patch
- https://github.com/go-vikunja/vikunja/pull/2577 Issue Tracking
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0 Release Notes
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7 Exploit, Vendor Advisory