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.

Weakness classification

• security-advisories@github.com: CWE-407

Primary references

• security-advisories@github.com — Patch
• security-advisories@github.com — Issue Tracking
• security-advisories@github.com — Release Notes
• security-advisories@github.com — Exploit, Vendor Advisory