{"id":"CVE-2026-123523","published":"2026-11-08T02:16:41.780","lastModified":"2026-11-08T02:16:41.907","description":"Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3x3m-2j93-w46j","tags":[]},{"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-memory-exhaustion-via-unbounded-avatar-size-cache","tags":[]}],"exploitRefs":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3x3m-2j93-w46j","tags":[]}],"hasPoc":true,"ai":null}