{
    "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": "2026-10-13T15:17:14.297Z"
    },
    "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"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-13T15:17:02.736533Z",
                                "id": "CVE-2026-108260",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-13T15:17:14.297Z"
                }
            }
        ]
    }
}