CVE-2026-108260

{"id": "CVE-2026-108260", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-108260", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-13T15:17:02.736533Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.7, "exploitabilityScore": 2.3}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tinacms", "product": "tinacms", "versions": [{"status": "affected", "version": "< 3.14.0"}]}, {"vendor": "@tinacms", "product": "web-components", "versions": [{"status": "affected", "version": "< 0.2.1"}]}]}], "published": "2026-10-09T21:17:04.180", "references": [{"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", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-83"}]}], "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."}], "lastModified": "2026-10-16T20:04:29.760", "sourceIdentifier": "security-advisories@github.com"}