CVE-2026-28793: high-severity vulnerability in @tinacms cli
Path Traversal Leading to Arbitrary File Read, Write and Delete in TinaCMS
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
@tinacms · cliRelated CVEs — @tinacms cli
In the same product, most dangerous first.
CVE-2026-29066MEDIUMArbitrary File Read via Disabled Vite Filesystem Restriction in TinaCMS CLIEPSS 1.0%CVE-2026-28792CRITICALCross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMSEPSS 0.6%CVE-2026-108259HIGHTina: Code injection via unescaped Git branch name in generated client sourceEPSS 0.3%