What is CVE-2026-35597?

CVE-2026-35597 is a medium-severity vulnerability in Go-vikunja Vikunja, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.9/10. Published 2026-04-10.

How severe is CVE-2026-35597?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Go-vikunja Vikunja

CVE-2026-35597

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the TOTP failed-attempt lockout mechanism is non-functional due to a database transaction handling bug. When a TOTP validation fails, the login handler in pkg/…

EPSS: 0.001 (17.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Go-vikunja Vikunja — versions < 2.3.0

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-fgfv-pv97-6cmj (x_refsource_CONFIRM)
https://github.com/go-vikunja/vikunja/pull/2576 (x_refsource_MISC)
https://github.com/go-vikunja/vikunja/commit/6ca0151d02fa0e8c7e2181ab916a28e08caaaec8 (x_refsource_MISC)
https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-35597?: CVE-2026-35597 is a medium-severity vulnerability in Go-vikunja Vikunja, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.9/10. Published 2026-04-10.
How severe is CVE-2026-35597?: Medium severity. CVSS v3 base score is 5.9 out of 10.