CVE-2026-28792: Tina is a headless content management system

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CRITICAL 9.6UPGRADE

CVE-2026-28792 is a critical-severity flaw (CVSS 9.6) 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 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 whi

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-22, CWE-942
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"

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-2026-28792?

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

Is CVE-2026-28792 being exploited?

CVE-2026-28792 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-2026-28792 affect?

CVE-2026-28792 affects tinacms\/cli. Severity is critical (CVSS 9.6). 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 brow

How urgent is CVE-2026-28792?

Priority 50/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-34603 HIGH 7.1 UPGRADE Tina is a headless content management system
CVE-2026-29066 MEDIUM 6.2 UPGRADE Tina is a headless content management system
CVE-2026-28793 HIGH 8.4 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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