{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55417", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T21:48:43.125Z", "datePublished": "2026-07-07T20:02:54.306Z", "dateUpdated": "2026-07-07T20:03:12.731Z"}, "containers": {"cna": {"title": "Chevereto private profile setting leaks username on /json endpoint", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp"}, {"name": "https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153", "tags": ["x_refsource_MISC"], "url": "https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153"}], "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"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-07T20:03:12.731Z"}, "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."}], "source": {"advisory": "GHSA-h4jp-mxfx-g8xp", "discovery": "UNKNOWN"}}}}

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