{"id":"CVE-2026-108259","title":"Tina is a headless content management system","summary":"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…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-94"],"vendor":"tinacms","product":"@tinacms/cli","affected":["@tinacms/cli <= 2.7.0"],"patched":["@tinacms/cli 3.0.0"],"published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T21:17:04.017","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108259","references":[{"url":"https://github.com/tinacms/tinacms/commit/d030d414d39e15de79bf36e4c728d57205e71dde","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/pull/7526","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@3.0.0","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-pwhx-cvv3-qj5c","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-pwhx-cvv3-qj5c"}],"tags":["nvd","ghsa","npm"],"aliases":["GHSA-pwhx-cvv3-qj5c"],"ecosystem":"npm","ingestedAt":"2026-10-09T21:12:42.322Z","slug":"CVE-2026-108259","body":"## Overview\n\nTina 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-108259)\n\nAffected packages:\n\n- `@tinacms/cli <= 2.7.0`\n\nPatched in:\n\n- `@tinacms/cli 3.0.0`\n\nSource: https://github.com/advisories/GHSA-pwhx-cvv3-qj5c","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}