CVE-2026-35599

MEDIUM EPSS 26.6%
Published Apr 10, 20262mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Apr 10, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
26.6% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-407

Affected Products 1

VendorProductVersionRange
vikunjavikunja* <2.3.0

References 4

  • github.com https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481b
    Patch
  • github.com https://github.com/go-vikunja/vikunja/pull/2577
    Issue Tracking
  • github.com https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
    Release Notes
  • github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r4fg-73rc-hhh7
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/go-vikunja/vikunja/commit/6df0d6c8f54b01db6464c42810e40e55f12b481b
    Patch