{"id":"CVE-2026-108260","title":"Tina is a headless content management system","summary":"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 sch…","severity":"high","cvss":7.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","cwe":["CWE-79","CWE-83"],"vendor":"tinacms","product":"@tinacms/web-components","affected":["@tinacms/web-components <= 0.2.0"],"patched":["@tinacms/web-components 0.2.1"],"published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T21:17:04.180","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108260","references":[{"url":"https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/pull/7523","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-c42q-qvc3-j6vg"}],"tags":["nvd","ghsa","npm"],"aliases":["GHSA-c42q-qvc3-j6vg"],"ecosystem":"npm","ingestedAt":"2026-10-09T21:12:42.322Z","slug":"CVE-2026-108260","body":"## Overview\n\nTina 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-108260)\n\nAffected packages:\n\n- `@tinacms/web-components <= 0.2.0`\n\nPatched in:\n\n- `@tinacms/web-components 0.2.1`\n\nSource: https://github.com/advisories/GHSA-c42q-qvc3-j6vg","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}