{"id":"CVE-2026-55417","summary":"Chevereto private profile setting leaks username on /json endpoint","details":"Chevereto is a self-hosted media-sharing platform. Starting in version 3.7.5 and prior to version 4.5.4, when a user enables the private profile option, visiting their profile HTML route (`/username`) correctly returns 404. However, the `/json` AJAX listing endpoint does not apply the same check. An unauthenticated caller who knows the target's user ID can retrieve all of that user's publicly-scoped images, revealing the username (which should be private). This is patched in Chevereto v4.5.4. No known workarounds are available.","aliases":["GHSA-h4jp-mxfx-g8xp"],"modified":"2026-07-12T03:54:30.221952316Z","published":"2026-07-07T20:02:54.306Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55417.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"\u003e= 1.0.0"},{"last_affected":"\u003e= 1.0.0"}]}]},"references":[{"type":"WEB","url":"https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55417.json"},{"type":"ADVISORY","url":"https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55417"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chevereto/chevereto","events":[{"introduced":"0"},{"fixed":"bef9ab09d501c035495e84d71a3442a5a78f16a9"},{"introduced":"3355a33451d51c9db0eb0541c6eb3cdf4d64263f"},{"fixed":"bef9ab09d501c035495e84d71a3442a5a78f16a9"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"3.7.5"},{"fixed":"4.5.4"},{"introduced":"4.0.5"}]}}],"versions":["4.5.3","4.5.2","4.5.1","4.5.0","4.4.2","4.4.1","4.4.0","4.3.7","4.3.6","4.3.5","4.3.4","4.3.3","4.3.2","4.3.1","4.3.0","4.2.5","4.2.4","4.2.3","4.2.2","4.2.1","4.2.0","4.1.4","4.1.3","4.1.2","4.1.1","4.1.0","4.0.12","4.0.11","4.0.10","4.0.9","4.0.8","4.0.7","4.0.6","4.0.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55417.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"}]}