Path Traversal in Ssw Tinacms\/cli
CVE-2026-28792
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001
Affected products
- Ssw Tinacms\/cli
- @Tinacms Cli — versions < 2.1.8
Weakness classification (CWE)
References
- github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-28792?
- CVE-2026-28792 is a critical-severity vulnerability in Ssw Tinacms\/cli, classified under Path Traversal. CVSS score: 9.6/10. Published 2026-03-12.
- How severe is CVE-2026-28792?
- Critical severity. CVSS v3 base score is 9.6 out of 10.