{"id":"CVE-2026-55417","state":"PUBLISHED","title":"Chevereto private profile setting leaks username on /json endpoint","description":"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.","publishedAt":"2026-07-07T20:02:54.306Z","updatedAt":"2026-07-08T13:11:19.485Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["chevereto chevereto","chevereto chevereto/chevereto","chevereto rodber/chevereto-free"],"affected":[{"vendor":"chevereto","product":"chevereto","versions":[{"version":">= 3.7.5, < 4.5.4","status":"affected"}]},{"vendor":"chevereto","product":"chevereto/chevereto","versions":[{"version":">= 4.0.5, < 4.5.4","status":"affected"}]},{"vendor":"chevereto","product":"rodber/chevereto-free","versions":[{"version":">= 1.0.0","status":"affected"}]}],"references":["https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp","https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55417.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55417","state":"PUBLISHED","datePublished":"2026-07-07T20:02:54.306Z","dateUpdated":"2026-07-08T13:11:19.485Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T21:48:43.125Z"},"containers":{"cna":{"title":"Chevereto private profile setting leaks username on /json endpoint","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"chevereto","product":"chevereto","versions":[{"version":">= 3.7.5, < 4.5.4","status":"affected"}]},{"vendor":"chevereto","product":"chevereto/chevereto","versions":[{"version":">= 4.0.5, < 4.5.4","status":"affected"}]},{"vendor":"chevereto","product":"rodber/chevereto-free","versions":[{"version":">= 1.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp","name":"https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp","tags":["x_refsource_CONFIRM"]},{"url":"https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153","name":"https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-07T20:03:12.731Z"},"source":{"advisory":"GHSA-h4jp-mxfx-g8xp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T13:11:14.626911Z","id":"CVE-2026-55417","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-08T13:11:19.485Z"}}]}}}