{"id":"CVE-2026-123527","published":"2026-11-08T02:16:42.480","lastModified":"2026-11-08T02:16:42.610","description":"Vikunja from 2.4.0 before 2.7.1 contains an authorization bypass vulnerability that allows token holders to perform unintended operations due to colliding v1 and v2 API token permission keys. Attackers with a token scoped to read project backgrounds can delete them via the v2 DELETE background route, and bucket create-only tokens can update existing buckets.","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-j5v7-qcwp-5g32","tags":[]},{"url":"https://www.vulncheck.com/advisories/vikunja-2.4.0-before-2.7.1-api-token-scope-collision-authorization-bypass","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-j5v7-qcwp-5g32","tags":[]}],"hasPoc":true,"ai":null}