Medium severity6.5NVD Advisory· Published Apr 10, 2026· Updated Apr 17, 2026
CVE-2026-35599
CVE-2026-35599
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
code.vikunja.io/apiGo | < 2.3.0 | 2.3.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481bnvdPatchWEB
- github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-r4fg-73rc-hhh7ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35599ghsaADVISORY
- github.com/go-vikunja/vikunja/pull/2577nvdIssue TrackingWEB
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0nvdRelease NotesWEB
News mentions
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