CVE-2026-28791: high-severity vulnerability in tinacms
Path Traversal in Media Upload Handle in Tina
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 0.3%
Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
tinacms · tinacmsRelated CVEs — tinacms
In the same product, most dangerous first.
CVE-2023-25164HIGHSensitive Information leak via Script File in TinaCMSEPSS 0.7%CVE-2026-63506HIGHTina: [Broken Access Control] letting any TinaCloud user authorize against any self-hosted siteEPSS 0.5%CVE-2025-68278HIGHtinacms vulnerable to arbitrary code executionEPSS 0.5%CVE-2026-34603HIGH@tinacms/graphql's Media Endpoints Can Escape the Media Root via Symlinks or JunctionsEPSS 0.4%CVE-2026-55661MEDIUMTinaCMS rich-text (slatejson) rendering does not sanitize link/image URLs, allowing stored XSS via dangerous URL schemesEPSS 0.4%CVE-2026-33949HIGH@tinacms/graphql has Path Traversal that leads to overwrite of arbitrary filesEPSS 0.4%