{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-108260", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-09T17:33:15.409Z", "datePublished": "2026-10-09T20:40:37.228Z", "dateUpdated": "2026-10-09T20:40:37.228Z"}, "containers": {"cna": {"title": "@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-83", "lang": "en", "description": "CWE-83: Improper Neutralization of Script in Attributes in a Web Page", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg"}, {"name": "https://github.com/tinacms/tinacms/pull/7523", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/pull/7523"}, {"name": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b"}, {"name": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1"}], "affected": [{"vendor": "tinacms", "product": "tinacms", "versions": [{"version": "< 3.14.0", "status": "affected"}]}, {"vendor": "@tinacms", "product": "web-components", "versions": [{"version": "< 0.2.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-09T20:40:37.228Z"}, "descriptions": [{"lang": "en", "value": "Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1."}], "source": {"advisory": "GHSA-c42q-qvc3-j6vg", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "tinacms", "vendor": "tinacms", "versions": [{"status": "affected", "version": "< 3.14.0"}]}, {"product": "web-components", "vendor": "@tinacms", "versions": [{"status": "affected", "version": "< 0.2.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1."}], "id": "CVE-2026-108260", "lastModified": "2026-10-09T21:17:04.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-09T21:17:04.180", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b"}, {"source": "security-advisories@github.com", "url": "https://github.com/tinacms/tinacms/pull/7523"}, {"source": "security-advisories@github.com", "url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-83"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}