CVE-2026-35599
Last modified
CVE-2026-35599 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vikunja | Vikunja | < 2.3.0 |
References
- https://github.com/go-vikunja/vikunja/pull/2577Issue Tracking
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-35599?
How severe is CVE-2026-35599?
How do I fix CVE-2026-35599?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-35593Trilium Notes is an open-source, cross-platform hierarchical…6.8
- CVE-2026-35594Vikunja is an open-source self-hosted task management platfo…6.5
- CVE-2026-35595Vikunja is an open-source self-hosted task management platfo…8.3
- CVE-2026-35596Vikunja is an open-source self-hosted task management platfo…4.3
- CVE-2026-35597Vikunja is an open-source self-hosted task management platfo…7.5
- CVE-2026-35598Vikunja is an open-source self-hosted task management platfo…4.3
- CVE-2026-3560Philips Hue Bridge HomeKit hk_hap_pair_storage_put Heap-base…8.8
- CVE-2026-35600Vikunja is an open-source self-hosted task management platfo…5.4
- CVE-2026-35601Vikunja is an open-source self-hosted task management platfo…4.1
- CVE-2026-35602Vikunja is an open-source self-hosted task management platfo…7.1
- CVE-2026-35603Claude Code is an agentic coding tool. In versions prior to …7.3
- CVE-2026-35604File Browser is a file managing interface for uploading, del…8.1
Are you affected by CVE-2026-35599?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST