{"schemaVersion":3,"id":"CVE-2026-110494","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Adding attachments to a release checked the repository and release of an attachment but not whether it was already linked to an issue or comment. A user with write access to the releases of a repository, who knew the UUID of an attachment in that repository, could link it to a release. This exposed the file name, size and download count of the attachment through the release and allowed the user to rename or delete it.","dates":{"published":"2026-10-18T18:57:26.290Z","modified":"2026-10-19T20:20:57.542Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00198,"percentile":0.09001,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-19T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00198,"percentile":0.09001}],"last30":[{"date":"2026-10-19T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00198,"percentile":0.09001}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key","description":"The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/639.html"}],"affected":[{"vendor":"gitea","product":"gitea","name":"Gitea","label":"gitea","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 28.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 28.1.0","eol":null,"hubHref":"/vendor/gitea/gitea"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-cwq7-782w-pxcc","label":"github.com/go-gitea/gitea/security/advisories/GHSA-cwq7-782w-pxcc","hostname":"github.com","tags":["Vendor Advisory"]},{"url":"https://github.com/go-gitea/gitea/pull/39839","label":"github.com/go-gitea/gitea/pull/39839","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/go-gitea/gitea/pull/39847","label":"github.com/go-gitea/gitea/pull/39847","hostname":"github.com","tags":["Patch"]},{"url":"https://blog.gitea.com/release-of-28.2.0/","label":"blog.gitea.com/release-of-28.2.0/","hostname":"blog.gitea.com","tags":["Release Notes"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.2.0","label":"github.com/go-gitea/gitea/releases/tag/v28.2.0","hostname":"github.com","tags":["Release Notes"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-18T18:57:26.290Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-19T20:20:57.542Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":25,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T01:16:42.588Z","stale":false,"partial":false}}