CVE-2026-29066: Tina is a headless content management system

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MEDIUM 6.2UPGRADE

CVE-2026-29066 is a medium-severity flaw (CVSS 6.2) affecting tinacms\/cli. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-200, CWE-552
Published	2026-03-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: ssw

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-12 17:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

ssw tinacms\/cli UPGRADE

Affected: < 2.1.8

Fixed in: 2.1.8

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls tinacmscli

2. UPGRADE to 2.1.8

npm install tinacmscli@">=2.1.8"

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: TinaCMS - Path Traversal

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-29066?

tinacms\/cli: upgrade to 2.1.8. Exact commands for each OS are on this page.

Is CVE-2026-29066 being exploited?

CVE-2026-29066 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-29066 affect?

CVE-2026-29066 affects tinacms\/cli. Severity is medium (CVSS 6.2). 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 wh

How urgent is CVE-2026-29066?

Priority 43/100. Public exploit reference

Related CVEs

CVE-2026-34603 HIGH 7.1 UPGRADE Tina is a headless content management system
CVE-2026-28793 HIGH 8.4 UPGRADE Tina is a headless content management system
CVE-2026-28792 CRITICAL 9.6 UPGRADE Tina is a headless content management system
CVE-2026-28791 HIGH 7.4 UPGRADE Tina is a headless content management system

References

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