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

Exp

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.

Published: 2026-03-12 Last update: 2026-03-13 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-29066 is rated High Exploit Risk (73.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.48%, 91th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.60% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2026-29066

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2026-29066

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 4.88% 6.48% +1.60%
2 2026-05-19 4.68% 4.88% +0.20%
3 2026-05-10 — 4.68% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-29066

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.5 3.6 [email protected]

Weakness enumeration for CVE-2026-29066

GitHub Security Advisory for CVE-2026-29066

GHSA-m48g-4wr2-j2h6 · Severity: medium · Ecosystem: npm — TinaCMS CLI has Arbitrary File Read via Disabled Vite Filesystem Restriction

Affected software / configurations for CVE-2026-29066

Vendor Product Version Raw CPE
ssw tinacms\/cli < 2.1.8 cpe:2.3:a:ssw:tinacms\/cli:*:*:*:*:*:node.js:*:*

References for CVE-2026-29066

cvelogic Threat Intelligence