Vulnerability in Go-Vikunja Vikunja
CVE-2026-33315
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, the Caldav endpoint allows login using Basic Authentication, which in turn allows users to bypass the TOTP on 2FA-enabled accounts. The user can then access standard project information that would normally be protected behind 2FA (if enabled), such as project name, description, etc. Version 2.2.0 patches the issue.
EPSS: 0.003 (22.5th 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:L/I:N/A:N.
Affected products
- Go-vikunja Vikunja — versions < 2.2.0
- Vikunja
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-33315?
- CVE-2026-33315 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 4.3/10. Published 2026-03-24.
- How severe is CVE-2026-33315?
- Medium severity. CVSS v3 base score is 4.3 out of 10.