CVE-2026-59992
Tina: Broken Access Control: arbitrary bucket-key write/delete in `next-tinacms-s3` (and sibling production media adapters)
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | next-tinacms-s3 | < 23.0.4 | 23.0.4 |
| npm | next-tinacms-dos | < 23.0.4 | 23.0.4 |
| npm | next-tinacms-azure | < 14.0.4 | 14.0.4 |
| npm | next-tinacms-cloudinary | < 26.0.4 | 26.0.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-8mq9-5fw2-5rm4
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2026-59992