Arbitrary Code Injection Affecting @tinacms/cli package, versions <2.4.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
NewCVE-2026-54074 (opens in a new tab)How to fix?
Upgrade @tinacms/cli to version 2.4.3 or higher.
Overview
@tinacms/cli is a package used to set up your project with Tina Cloud configuration, and run a local version of the Tina Cloud content-api.
Affected versions of this package are vulnerable to Arbitrary Code Injection through the addVariablesToCode/makeFieldsWithInternalCode process in codeTransformer.ts. An attacker can execute injected code in the generated template file by supplying Forestry field labels, names, or option values that reproduce the internal marker and get unquoted into raw source during migration. The vulnerable path serializes untrusted Forestry YAML via JSON.stringify and then strips a hard-coded sentinel using a regular expression, allowing a forged marker to turn attacker-controlled text into executable template code. In affected migrations, this can corrupt the generated content model files and let a malicious config author inject arbitrary JavaScript into the output consumed by the TinaCMS tooling.