CVE-2026-33315 (GCVE-0-2026-33315)
Vulnerability from cvelistv5 – Published: 2026-03-24 14:53 – Updated: 2026-03-24 15:33
VLAI
EPSS
VEX
Title
Vikunja has a 2FA Bypass via Caldav Basic Auth
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-24 15:33 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | x_refsource_CONFIRM |
| https://github.com/go-vikunja/vikunja/commit/cdf5… | x_refsource_MISC |
| https://vikunja.io/changelog/vikunja-v2.2.0-was-r… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| go-vikunja | vikunja |
Affected:
< 2.2.0
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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