Authentication Bypass Using an Alternate Path or Channel Affecting code.vikunja.io/api/pkg/routes/caldav package, versions <2.2.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-CODEVIKUNJAIOAPIPKGROUTESCALDAV-15809195
- published31 Mar 2026
- disclosed20 Mar 2026
- creditalp1n3-dev
Introduced: 20 Mar 2026
CVE-2026-33315 Â (opens in a new tab)How to fix?
Upgrade code.vikunja.io/api/pkg/routes/caldav to version 2.2.0 or higher.
Overview
Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via the caldav authentication process. An attacker can gain unauthorized access to sensitive project information by bypassing two-factor authentication using Basic Authentication credentials.