CVE-2026-35599

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-26)

CWE

CWE-407

Published

2026-04-10

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• vikunja:vikunja

Packages (OSV)

References

• https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481b
• https://github.com/go-vikunja/vikunja/pull/2577
• https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7

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