What is CVE-2026-40103?

CVE-2026-40103 is a medium-severity vulnerability in Go-vikunja Vikunja, classified under CWE-836. CVSS score: 4.3/10. Published 2026-04-10.

How severe is CVE-2026-40103?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Go-vikunja Vikunja

CVE-2026-40103

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a…

EPSS: 0.000 (10.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Go-vikunja Vikunja — versions < 2.3.0

Weakness classification (CWE)

CWE-836

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83 (x_refsource_CONFIRM)
https://github.com/go-vikunja/vikunja/pull/2584 (x_refsource_MISC)
https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae (x_refsource_MISC)
https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40103?: CVE-2026-40103 is a medium-severity vulnerability in Go-vikunja Vikunja, classified under CWE-836. CVSS score: 4.3/10. Published 2026-04-10.
How severe is CVE-2026-40103?: Medium severity. CVSS v3 base score is 4.3 out of 10.