Resource exhaustion in Go-Vikunja Vikunja
CVE-2026-123531
Vikunja from 1.0.0 before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to bypass service.maxitemsperpage by sending page=0 to /api/v1 list endpoints. Attackers can self-register and repeatedly request page=0 to force unbounded SQL queries, memory materialisation, and per-row query fan-out, degrading availability for other users.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/go-vikunja/vikunja/security/advisories/GHSA-v579-5fwc-gr28 (vendor-advisory)
- www.vulncheck.com/advisories/vikunja-1.0.0-before-2.7.1-pagination-limit-bypass… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123531?
- CVE-2026-123531 is a high-severity vulnerability in Go-Vikunja Vikunja, classified under Uncontrolled Resource Consumption. CVSS score: 8.8/10. Published 2026-11-08.
- How severe is CVE-2026-123531?
- High severity. CVSS v3 base score is 8.8 out of 10.