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CVE-2026-29066 PoC — Arbitrary File Read via Disabled Vite Filesystem Restriction in TinaCMS CLI

Source
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-29066.yaml
Associated Vulnerability
Title:Arbitrary File Read via Disabled Vite Filesystem Restriction in TinaCMS CLI (CVE-2026-29066)
Description:Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI dev server configures Vite with server.fs.strict: false, which disables Vite's built-in filesystem access restriction. This allows any unauthenticated attacker who can reach the dev server to read arbitrary files on the host system. This vulnerability is fixed in 2.1.8.
Description
TinaCMS CLI < 2.1.8 contains a file system read vulnerability caused by disabled Vite server.fs.strict setting, letting unauthenticated attackers read arbitrary files on the host system, exploit requires access to the dev server.
File Snapshot

 id: CVE-2026-29066

info:
  name: TinaCMS - Path Traversal
  author: theamanrawat
  severity: medium

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