What is CVE-2026-123519?

CVE-2026-123519 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-11-08.

How severe is CVE-2026-123519?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Go-Vikunja Vikunja

CVE-2026-123519

Vikunja before 2.7.1 contains a denial of service vulnerability that allows authenticated users to exhaust API process memory by uploading WeKan or vikunja-file imports with no item-count cap. Attackers can submit a ~22 MB WeKan JSON with hundreds of thousands of cards or duplicate IDs to the wekan migrate endpoint, triggering OOM and crashing the instance.

Published 2026-11-08 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Go-Vikunja Vikunja

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

GitHub Security Advisory (GHSA-g2xc-jv9q-46wq) (vendor-advisory)
VulnCheck Advisory: Vikunja before 2.7.1 Memory Exhaustion DoS via WeKan and Vikunja-File Imports (third-party-advisory)

Frequently asked questions

What is CVE-2026-123519?: CVE-2026-123519 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-11-08.
How severe is CVE-2026-123519?: Medium severity. CVSS v3 base score is 6.5 out of 10.