CVE-2026-54074

HIGH

@tinacms/cli: Remote Code Execution via Forestry migration — unsanitised __TINA_INTERNAL__ marker in user-controlled YAML labels

Title source: cna

Description

Tina is a headless content management system. @tinacms/cli versions prior to 2.4.3 contain a Remote Code Execution vulnerability in the Forestry-to-Tina migration command. The internal helper addVariablesToCode unquotes any value matching the marker "__TINA_INTERNAL__:::(.*?):::" inside the stringified collection JSON. User-supplied label and name fields from .forestry/**/*.yml are placed into that JSON without any sanitisation. An attacker who controls a Forestry-style project can therefore inject arbitrary JavaScript into the generated tina/templates.{ts,js} file. The injected code is written at module top level, so it executes the moment the developer runs tinacms dev or tinacms build, with the developer's privileges. This issue has been fixed in version 2.4.3.

References (1)

Core 1

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/tinacms/tinacms/security/advisories/GHSA-4936-9hrh-qqpw

Scores

CVSS v3 7.8

EPSS 0.0017

EPSS Percentile 6.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-94

Status published

Products (1)

tinacms/tinacms < 2.4.3

Published Jul 01, 2026

Tracked Since Jul 02, 2026