CVE-2026-28793 json
Path Traversal Leading to Arbitrary File Read, Write and Delete in TinaCMS
published 2026-03-12 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-11613 , GHSA-2f24-mg4x-534q
- cvss
- 8.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arbitrary files on the filesystem outside the intended media directory. When running tinacms dev, the CLI starts a local HTTP server (default port 4001) exposing endpoints such as /media/list/*, /media/upload/*, and /media/*. These endpoints process user-controlled path segments using decodeURI() and path.join() without validating that the resolved path remains within the configured media directory. This vulnerability is fixed in 2.1.8.
Patch / fix
- npm @tinacms/cli 2.1.8
- ssw tinacms/cli 2.1.8
- tina @tinacms/cli 2.1.8
- tinacms cli 2.1.8
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534q referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @tinacms/cli | <2.1.8 |
2.1.8 |
Affected products
- @tinacms cli
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534q
exploit, web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-28793
advisory
-
github.com
/tinacms/tinacms
package
Sources
- CVE List CVE-2026-28793
- GitHub Advisory GHSA-2f24-mg4x-534q
- NVD CVE-2026-28793
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.