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CVE-2026-91973 Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuth

🗓️ 15 Sep 2026 15:18:23Reported by VulnCheckType 
vulnrichment
 vulnrichment
🔗 github.com👁 4 Views

Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, an...

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15 Sep 2026 15:18Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
CVSS 48.7
EPSS0.00609
SSVC
4