{"id":"CVE-2026-108260","revision":"976a02a58eaf4b529846859c54dc628d","records":[{"revision":"976a02a58eaf4b529846859c54dc628d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108260","aliases":[],"title":"@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS","description":"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.","state":0,"publishedAt":"2026-10-09T20:40:37.228+00:00","modifiedAt":"2026-10-13T15:17:14.297+00:00","affected":[{"ecosystem":"Vendor product","name":"tinacms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"tinacms\",\n                    \"product\": \"tinacms\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.14.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"web-components","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@tinacms\",\n                    \"product\": \"web-components\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.2.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","score":7.6,"severity":"HIGH"}],"references":["https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg","https://github.com/tinacms/tinacms/pull/7523","https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b","https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108260","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108260","identifiers":["CVE-2026-108260"]},"retained":false,"historicalAffected":[]}],"coverage":[]}