Read the docs
TI-2026-22988 Aliases CVE-2026-28793GHSA-2f24-mg4x-534q

Path Traversal Leading to Arbitrary File Read, Write and Delete in TinaCMS

Priority HIGH 72CWE-22Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arbitrary files on the filesystem outside the intended media directory. When running tinacms dev, the CLI starts a local HTTP server (default port 4001) exposing endpoints such as /media/list/*, /media/upload/*, and /media/*. These endpoints process user-controlled path segments using decodeURI() and path.join() without validating that the resolved path remains within the configured media directory. This vulnerability is fixed in 2.1.8.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00237 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed cli (@tinacms): 2.1.8@tinacms/cli (npm): 2.1.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
tinacmsclibefore 2.1.82.1.8Patch availableCNA
—@tinacms/cli (npm)before 2.1.82.1.8Patch availableGHSA-2f24-mg4x-534q
  • cli Vendortinacms Affected before 2.1.8 Fixed in 2.1.8 Patch available CNA
  • @tinacms/cli (npm) Vendor— Affected before 2.1.8 Fixed in 2.1.8 Patch available GHSA-2f24-mg4x-534q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ssw:tinacms\/cli:*:*:*:*:*:node.js:*:*before 2.1.8Vulnerabletinacms
  • cpe:2.3:a:ssw:tinacms\/cli:*:*:*:*:*:node.js:*:* Versions before 2.1.8 Vulnerable ·tinacms

Remediation

  • Fix · CNA cli (@tinacms) Fixed in 2.1.8
  • Fix · GHSA-2f24-mg4x-534q @tinacms/cli (npm) Fixed in 2.1.8 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28793
  2. 2026-10-03 Alias added: GHSA-2f24-mg4x-534q

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-22987 Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS CVSS 3.1CRITICAL 9.7
  • TI-2026-26850 @tinacms/graphql's Media Endpoints Can Escape the Media Root via Symlinks or Junctions CVSS 3.1HIGH 8.3
  • TI-2026-22986 Path Traversal in Media Upload Handle in Tina CVSS 3.1HIGH 7.4
  • TI-2025-41854 tinacms vulnerable to arbitrary code execution CVSS 4.0HIGH 7.3
  • TI-2026-23211 Arbitrary File Read via Disabled Vite Filesystem Restriction in TinaCMS CLI CVSS 3.1MEDIUM 6.2
  • TI-2023-10626 Sensitive Information leak via Script File in TinaCMS CVSS 3.1HIGH 8.6
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences