{"id":"CVE-2026-59992","state":"PUBLISHED","title":"Tina: Broken Access Control: arbitrary bucket-key write/delete in `next-tinacms-s3` (and sibling production media adapters)","description":"Tina is a headless content management system. Prior to next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4, the first-party production media adapters pass attacker-controlled object keys to storage SDK upload and delete operations without enforcing the operator's configured mediaRoot. In packages/next-tinacms-s3/src/handlers.ts, createMediaHandler accepts req.query.key for a signed PutObject URL and the DELETE path uses req.query.media as the DeleteObjectCommand key. The same missing key-boundary check exists in packages/next-tinacms-dos/src/handlers.ts, packages/next-tinacms-azure/src/handlers.ts, and packages/next-tinacms-cloudinary/src/handlers.ts. An authenticated CMS editor can therefore create or delete objects anywhere the deployment's storage credential can reach, including other tenants' or non-media objects. These issues are fixed in next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4.","publishedAt":"2026-08-19T21:30:51.975Z","updatedAt":"2026-08-21T16:48:12.641Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["tinacms tinacms","tinacms next-tinacms-s3","tinacms next-tinacms-dos","tinacms next-tinacms-azure","tinacms next-tinacms-cloudinary"],"affected":[{"vendor":"tinacms","product":"tinacms","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-s3","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-dos","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-azure","versions":[{"version":"< 14.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-cloudinary","versions":[{"version":"< 26.0.4","status":"affected"}]}],"references":["https://github.com/tinacms/tinacms/security/advisories/GHSA-8mq9-5fw2-5rm4","https://github.com/tinacms/tinacms/pull/7088","https://github.com/tinacms/tinacms/commit/d44558e9b4502d4f4fc2c970d22985339fe2b6ce","https://github.com/tinacms/tinacms/releases/tag/next-tinacms-s3@23.0.4"],"weaknesses":["CWE-639","CWE-862"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59992.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59992","state":"PUBLISHED","datePublished":"2026-08-19T21:30:51.975Z","dateUpdated":"2026-08-21T16:48:12.641Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-07T19:41:00.005Z"},"containers":{"cna":{"title":"Tina: Broken Access Control: arbitrary bucket-key write/delete in `next-tinacms-s3` (and sibling production media adapters)","descriptions":[{"lang":"en","value":"Tina is a headless content management system. Prior to next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4, the first-party production media adapters pass attacker-controlled object keys to storage SDK upload and delete operations without enforcing the operator's configured mediaRoot. In packages/next-tinacms-s3/src/handlers.ts, createMediaHandler accepts req.query.key for a signed PutObject URL and the DELETE path uses req.query.media as the DeleteObjectCommand key. The same missing key-boundary check exists in packages/next-tinacms-dos/src/handlers.ts, packages/next-tinacms-azure/src/handlers.ts, and packages/next-tinacms-cloudinary/src/handlers.ts. An authenticated CMS editor can therefore create or delete objects anywhere the deployment's storage credential can reach, including other tenants' or non-media objects. These issues are fixed in next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4."}],"affected":[{"vendor":"tinacms","product":"tinacms","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-s3","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-dos","versions":[{"version":"< 23.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-azure","versions":[{"version":"< 14.0.4","status":"affected"}]},{"vendor":"tinacms","product":"next-tinacms-cloudinary","versions":[{"version":"< 26.0.4","status":"affected"}]}],"references":[{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-8mq9-5fw2-5rm4","name":"https://github.com/tinacms/tinacms/security/advisories/GHSA-8mq9-5fw2-5rm4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/tinacms/tinacms/pull/7088","name":"https://github.com/tinacms/tinacms/pull/7088","tags":["x_refsource_MISC"]},{"url":"https://github.com/tinacms/tinacms/commit/d44558e9b4502d4f4fc2c970d22985339fe2b6ce","name":"https://github.com/tinacms/tinacms/commit/d44558e9b4502d4f4fc2c970d22985339fe2b6ce","tags":["x_refsource_MISC"]},{"url":"https://github.com/tinacms/tinacms/releases/tag/next-tinacms-s3@23.0.4","name":"https://github.com/tinacms/tinacms/releases/tag/next-tinacms-s3@23.0.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-19T21:32:09.476Z"},"source":{"advisory":"GHSA-8mq9-5fw2-5rm4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-8mq9-5fw2-5rm4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T16:47:38.735308Z","id":"CVE-2026-59992","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-21T16:48:12.641Z"}}]}}}