CVE-2026-91968CWE-674

CVE-2026-91968

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.5
In the wild
Unconfirmed
What it is

vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the task-filter endpoint that accepts deeply nested filter expressions without recursion depth limits. Authenticated attackers can supply thousands of nested parentheses in the filter query parameter to exhaust memory and terminate the API process.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00436 · 36.5th percentile
Weakness
CWE-674 · Uncontrolled Recursion
Published
2026-09-15T20:17Z
References (3)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xxc3-xpmc-vmvr · [email protected]https://www.vulncheck.com/advisories/vikunja-before-2.6.0-denial-of-service-via-unbounded-filter-recursion · [email protected]https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xxc3-xpmc-vmvr · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:18Z
    vikunja before 2.6.0 Denial of Service via unbounded filter recursion
    cvelistv5