CVE-2026-108259

{"id": "CVE-2026-108259", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-108259", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-14T02:11:59.476043Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tinacms", "product": "tinacms", "versions": [{"status": "affected", "version": "< 3.0.0"}]}, {"vendor": "@tinacms", "product": "cli", "versions": [{"status": "affected", "version": "< 3.0.0"}]}]}], "published": "2026-10-09T21:17:04.017", "references": [{"url": "https://github.com/tinacms/tinacms/commit/d030d414d39e15de79bf36e4c728d57205e71dde", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/pull/7526", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@3.0.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-pwhx-cvv3-qj5c", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-pwhx-cvv3-qj5c", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-16T20:04:29.760", "sourceIdentifier": "security-advisories@github.com"}