What is CVE-2026-29066?

CVE-2026-29066 is a medium-severity vulnerability in Ssw Tinacms\/cli, classified under Information Disclosure. CVSS score: 6.2/10. Published 2026-03-12.

How severe is CVE-2026-29066?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Information disclosure in Ssw Tinacms\/cli

CVE-2026-29066

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.

Vulnerability class: Information Disclosure

Published 2026-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.006 · change: -0.005

Affected products

Ssw Tinacms\/cli
@Tinacms Cli — versions < 2.1.8

Weakness classification (CWE)

References

github.com/tinacms/tinacms/security/advisories/GHSA-m48g-4wr2-j2h6 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-29066?: CVE-2026-29066 is a medium-severity vulnerability in Ssw Tinacms\/cli, classified under Information Disclosure. CVSS score: 6.2/10. Published 2026-03-12.
How severe is CVE-2026-29066?: Medium severity. CVSS v3 base score is 6.2 out of 10.