{"id":"CVE-2026-123511","published":"2026-11-08T02:16:39.670","lastModified":"2026-11-08T02:16:39.797","description":"Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated CalDAV clients to create unbounded dummy tasks by sending VTODOs with thousands of RELATED-TO properties. Attackers can repeat unknown related UIDs in a single PUT request to generate thousands of task, relation, and event rows, bloating the database and overloading the event pipeline.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-c934-xjq2-mrg3","tags":[]},{"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-resource-exhaustion-via-caldav-vtodo-related-to-entries","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-c934-xjq2-mrg3","tags":[]}],"hasPoc":true,"ai":null}