CVE-2026-28793

HIGH

TinaCMS CLI <2.1.8 - Path Traversal

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-28793. PoCs published by alaeddine03.

AI-analyzed exploit summary The repository contains a README with minimal technical details and a link to an external advisory, lacking actual exploit code or in-depth analysis. It appears to be a placeholder or lure rather than a functional PoC.

Description

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.

Exploits (1)

github SUSPICIOUS
by alaeddine03 · poc
https://github.com/alaeddine03/CVE-Disclosures/tree/main/Tinacms/ CVE-2026-28793

The repository contains a README with minimal technical details and a link to an external advisory, lacking actual exploit code or in-depth analysis. It appears to be a placeholder or lure rather than a functional PoC.

Classification
Suspicious 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Theoretical
Target: TinaCMS CLI development server
No auth needed
Prerequisites: access to the vulnerable endpoint
devstral-2 · analyzed Apr 11, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 8.4
EPSS 0.0020
EPSS Percentile 10.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-22
Status published
Products (1)
ssw/tinacms\/cli < 2.1.8
Published Mar 12, 2026
Tracked Since Mar 13, 2026