{"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":"2026-10-16","sourceUpdated":"2026-10-16T20:04:29.760","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/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-c42q-qvc3-j6vg"}],"tags":["nvd","ghsa","npm","cve.org","exploit-available"],"epss":0.00254,"epssPercentile":0.16794,"aliases":["GHSA-c42q-qvc3-j6vg"],"ecosystem":"npm","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T15:17:02.736533Z"},"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":"midnight","depthScore":54,"depthScoreParts":{"impact":41.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":220933,"id":"CVE-2026-108260","ts":1792026927001,"field":"exploit_available","old":"false","new":"true"}]}