CVE-2026-108259High· 8.2▾ MidnightPoC availableTina 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…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 45.1 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 11.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Exploit / PoC code exists
Last analysed / modified upstream
0.3% → 0.3%
Tina 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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
@tinacms/cli <= 2.7.0Patched in:
@tinacms/cli 3.0.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-108261Critical· 9.3Tina is a headless content management system
CVE-2026-108260High· 7.6Tina is a headless content management system
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CVE-2026-63123Medium· 6.5Tina is a headless content management system
CVE-2023-3519Critical· 9.8Unauthenticated remote code execution