What is CVE-2026-33473?

CVE-2026-33473 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Improper Authentication. CVSS score: 5.7/10. Published 2026-03-24.

How severe is CVE-2026-33473?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Auth bypass in Go-Vikunja Vikunja

CVE-2026-33473

Vikunja is an open-source self-hosted task management platform. Starting in version 0.13 and prior to version 2.2.1, any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.2.1 patches the issue.

Vulnerability class: Broken Authentication

EPSS: 0.003 (17.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

Affected products

Go-vikunja Vikunja — versions >= 0.13, < 2.2.1
Vikunja

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-33473?: CVE-2026-33473 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Improper Authentication. CVSS score: 5.7/10. Published 2026-03-24.
How severe is CVE-2026-33473?: Medium severity. CVSS v3 base score is 5.7 out of 10.