Tina: Code injection via unescaped Git branch name in generated client source

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-108259
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-09 21:17:04 UTC
Updated2026-10-09 21:17:04 UTC
DescriptionTina is a headless content management system. Prior to 3.0.0, @tinacms/cli reads Git branch values from VERCEL_GIT_COMMIT_REF, GITHUB_BRANCH, or HEAD, incorporates the raw value into the API URL, and interpolates that URL into JavaScript string literals in packages/@tinacms/cli/src/next/codegen/index.ts and packages/@tinacms/cli/src/next/codegen/codegen/plugin.ts. A crafted Git-valid branch name containing a quote can terminate the generated string and inject an expression that executes when the generated client module is imported during a preview build. The injected code runs with the build process privileges and can read environment credentials, modify deployment artifacts, or make network requests. This issue is fixed in version 3.0.0.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

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

EPSS: 0.002520000 probability, percentile 0.153630000 (date 2026-10-10)

Problem Types: CWE-94 | CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
3.1CNADECLARED8.2HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tinacms Tinacms affected < 3.0.0 Not specified
CNA @tinacms Cli affected < 3.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/tinacms/tinacms/commit/d030d414d39e15de79bf36e4c728d57205e71dde [email protected] github.com
github.com/tinacms/tinacms/releases/tag/@tinacms/[email protected] [email protected] github.com
github.com/tinacms/tinacms/security/advisories/GHSA-pwhx-cvv3-qj5c [email protected] github.com
github.com/tinacms/tinacms/pull/7526 [email protected] github.com
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