{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-113657",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-20T14:27:46.641Z",
        "datePublished": "2026-10-20T16:54:12.995Z",
        "dateUpdated": "2026-10-20T17:08:06.854Z"
    },
    "containers": {
        "cna": {
            "title": "ApostropheCMS sanitize-html: SMIL animation namespace-prefix bypass allows javascript: URI injection (XSS)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 3.7,
                        "baseSeverity": "LOW",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948"
                },
                {
                    "name": "https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce"
                },
                {
                    "name": "https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350"
                },
                {
                    "name": "https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0"
                }
            ],
            "affected": [
                {
                    "vendor": "apostrophecms",
                    "product": "apostrophe",
                    "versions": [
                        {
                            "version": "< 4.33.0",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "apostrophecms",
                    "product": "sanitize-html",
                    "versions": [
                        {
                            "version": ">= 2.17.7, < 2.18.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-20T16:54:12.995Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From sanitize-html 2.17.7 until 2.18.0, an application configuration that permits namespace-prefixed SVG animation elements and the relevant URL-targeting attributes can bypass the SMIL URL protection because prefixed tag names do not match the unprefixed animation-element check. The bypass can rewrite a link destination to an unsafe URI after the sanitized SVG is rendered, with script execution occurring when a user activates the affected link; the default sanitizer configuration is not unconditionally affected. This issue is fixed in sanitize-html 2.18.0."
                }
            ],
            "source": {
                "advisory": "GHSA-374f-7chj-9948",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-20T17:07:42.782981Z",
                                "id": "CVE-2026-113657",
                                "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": "2026-10-20T17:08:06.854Z"
                }
            }
        ]
    }
}