{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-104816",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-02T14:17:09.334Z",
        "datePublished": "2026-10-13T18:38:06.905Z",
        "dateUpdated": "2026-10-13T20:21:09.308Z"
    },
    "containers": {
        "cna": {
            "title": "Misskey: Cross-site scripting in RSS feed item links",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "LOW",
                        "subIntegrityImpact": "LOW",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.5,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-p73x-6qrq-34jc",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-p73x-6qrq-34jc"
                },
                {
                    "name": "https://github.com/misskey-dev/misskey/pull/17831",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/misskey-dev/misskey/pull/17831"
                },
                {
                    "name": "https://github.com/misskey-dev/misskey/commit/8dd59a8c06da49b8f302d902d73d04397ee29366",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/misskey-dev/misskey/commit/8dd59a8c06da49b8f302d902d73d04397ee29366"
                },
                {
                    "name": "https://github.com/misskey-dev/misskey/releases/tag/2026.7.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/misskey-dev/misskey/releases/tag/2026.7.0"
                }
            ],
            "affected": [
                {
                    "vendor": "misskey-dev",
                    "product": "misskey",
                    "versions": [
                        {
                            "version": ">= 12.0.0, <= 13.14.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2023.9.0-beta.1, < 2026.7.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-13T18:38:06.905Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Misskey is an open source, federated social media platform. From 12.0.0 until 2026.7.0, the RSS components display feed item links from configured feeds without verifying their URL schemes. Missing URL scheme verification allows an attacker who controls feed content to provide an unsafe-scheme link that causes script execution when a user clicks it in an RSS widget. This issue is fixed in version 2026.7.0."
                }
            ],
            "source": {
                "advisory": "GHSA-p73x-6qrq-34jc",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-13T20:19:04.007207Z",
                                "id": "CVE-2026-104816",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-10-13T20:21:09.308Z"
                }
            }
        ]
    }
}