{"id":"CVE-2026-33315","summary":"Vikunja has a 2FA Bypass via Caldav Basic Auth","details":"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.","aliases":["GHSA-47cr-f226-r4pq","GO-2026-4794"],"modified":"2026-04-10T05:42:45.185123Z","published":"2026-03-24T14:53:34.375Z","related":["SUSE-SU-2026:1135-1"],"database_specific":{"cwe_ids":["CWE-288"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33315.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33315.json"},{"type":"FIX","url":"https://github.com/go-vikunja/vikunja/commit/cdf5d30a425d032f749b78b98b828f25ad882615"},{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-47cr-f226-r4pq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33315"},{"type":"WEB","url":"https://vikunja.io/changelog/vikunja-v2.2.0-was-released"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/go-vikunja/vikunja","events":[{"introduced":"0"},{"fixed":"b365be1881641dd2791d3dff4c26ad941c13cef6"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.2.0"}]}}],"versions":["v0.1","v0.10","v0.11","v0.12","v0.13","v0.14.0","v0.15.0","v0.16.0","v0.17.0","v0.18.0","v0.18.1","v0.19.0","v0.19.1","v0.19.2","v0.2","v0.20.0","v0.20.1","v0.20.3","v0.20.4","v0.21.0","v0.22.0","v0.22.1","v0.23.0","v0.24.1","v0.3","v0.4","v0.5","v0.6","v0.7","v0.8","v0.9","v1.0.0","v1.0.0-rc0","v1.0.0-rc1","v1.0.0-rc2","v1.0.0-rc3","v1.0.0-rc4","v1.1.0","v2.0.0","v2.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33315.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}