{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-21630",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2023-12-29T03:00:44.954Z",
        "datePublished": "2024-01-25T19:30:09.106Z",
        "dateUpdated": "2024-08-01T22:27:35.955Z"
    },
    "containers": {
        "cna": {
            "title": "Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6"
                },
                {
                    "name": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc"
                },
                {
                    "name": "https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf"
                },
                {
                    "name": "https://zulip.com/help/configure-who-can-invite-to-streams",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://zulip.com/help/configure-who-can-invite-to-streams"
                },
                {
                    "name": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"
                }
            ],
            "affected": [
                {
                    "vendor": "zulip",
                    "product": "zulip",
                    "versions": [
                        {
                            "version": "= 8.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2024-01-25T19:30:09.106Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi-use invitations, not single-use invitation links as in the prior CVE. Specifically, it applies when the installation has configured non-admins to be able to invite users and create multi-use invitations, and has also configured only admins to be able to invite users to streams. As in CVE-2023-32677, this does not let users invite new users to arbitrary streams, only to streams that the inviter can already see. Version 8.1 fixes this issue. As a workaround, administrators can limit sending of invitations down to users who also have the permission to add users to streams."
                }
            ],
            "source": {
                "advisory": "GHSA-87p9-wprh-7rm6",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-01T22:27:35.955Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6"
                    },
                    {
                        "name": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc"
                    },
                    {
                        "name": "https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf"
                    },
                    {
                        "name": "https://zulip.com/help/configure-who-can-invite-to-streams",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://zulip.com/help/configure-who-can-invite-to-streams"
                    },
                    {
                        "name": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"
                    }
                ]
            }
        ]
    }
}