CVE-2026-35599Vikunja has an Algorithmic Complexity DoS in Repeating Task Handler
Updated under an hour ago ()
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It affects go-vikunja vikunja and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-407
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Apr 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
go-vikunja vikunja go_vikunja:vikunja (from the name) | before 2.3.0 | CNA record |
vikunja vikunja vikunja:vikunja | before 2.3.0 | NVD |
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7x-refsource-confirm, exploit, vendor-advisory
- https://github.com/go-vikunja/vikunja/pull/2577x-refsource-misc, issue-tracking
- https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481bx-refsource-misc, patch
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.