Path Traversal Vulnerability in TinaCMS by Tina
CVE-2026-28791

7.4HIGH

Key Information:

Vendor

Tinacms

Status
Tinacms
Vendor
CVE Published:
12 March 2026

What is CVE-2026-28791?

A path traversal vulnerability exists in TinaCMS's media upload handler prior to version 2.1.7. This flaw allows attackers to manipulate user-controlled path segments, enabling them to write files to arbitrary locations on the server's filesystem. The vulnerability arises because the code uses path.join() without sufficient validation to ensure the resulting paths remain within the intended media directory. Users of TinaCMS are urged to upgrade to version 2.1.7 or later to secure their applications against this threat.

Affected Version(s)

tinacms < 2.1.7

References

https://github.com/tinacms/tinacms/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.