CVE-2026-28792

CRITICAL

TinaCMS <2.1.8 - Path Traversal

Title source: llm

Description

Tina is a headless content management system. Prior to 2.1.8 , the TinaCMS CLI dev server combines a permissive CORS configuration (Access-Control-Allow-Origin: *) with the path traversal vulnerability (previously reported) to enable a browser-based drive-by attack. A remote attacker can enumerate the filesystem, write arbitrary files, and delete arbitrary files on developer's machines by simply tricking them into visiting a malicious website while tinacms dev is running. This vulnerability is fixed in 2.1.8.

Exploits (1)

github WRITEUP

by alaeddine03 · poc

https://github.com/alaeddine03/CVE-Disclosures/tree/main/Tinacms/CVE-2026-28792

View Code ZIP pw:eip

References (1)

[Vendor Advisory] https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734

Scores

CVSS v3 9.6

EPSS 0.0031

EPSS Percentile 54.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Details

CWE

CWE-942 CWE-22

Status published

Products (1)

ssw/tinacms\/cli < 2.1.8

Published Mar 12, 2026

Tracked Since Mar 13, 2026