{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72724",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-10T13:48:09.545Z",
        "datePublished": "2026-08-10T15:59:53.965Z",
        "dateUpdated": "2026-08-11T01:57:42.639Z"
    },
    "containers": {
        "cna": {
            "title": "Discourse: Private Chat Threat Message Disclosure via Chat Onebox Channel/Threat ID Mismatch",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "lang": "en",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                            "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/discourse/discourse/security/advisories/GHSA-8g98-fvfc-9w48",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/discourse/discourse/security/advisories/GHSA-8g98-fvfc-9w48"
                },
                {
                    "name": "https://github.com/discourse/discourse/pull/42091",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/pull/42091"
                },
                {
                    "name": "https://github.com/discourse/discourse/pull/42092",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/pull/42092"
                },
                {
                    "name": "https://github.com/discourse/discourse/pull/42093",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/pull/42093"
                },
                {
                    "name": "https://github.com/discourse/discourse/pull/42094",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/pull/42094"
                },
                {
                    "name": "https://github.com/discourse/discourse/commit/1276d7032af8803956c74ae87ccfd976938dcd75",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/commit/1276d7032af8803956c74ae87ccfd976938dcd75"
                },
                {
                    "name": "https://github.com/discourse/discourse/commit/45ab6d54076de9ca4965888974d4416d5b48e83c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/commit/45ab6d54076de9ca4965888974d4416d5b48e83c"
                },
                {
                    "name": "https://github.com/discourse/discourse/commit/49efe1d7f098f2ce7301908815a211cc9248270f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/commit/49efe1d7f098f2ce7301908815a211cc9248270f"
                },
                {
                    "name": "https://github.com/discourse/discourse/commit/dc54846f0754799591717b6018343e49524e41ce",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/discourse/discourse/commit/dc54846f0754799591717b6018343e49524e41ce"
                }
            ],
            "affected": [
                {
                    "vendor": "discourse",
                    "product": "discourse",
                    "versions": [
                        {
                            "version": "< 2026.1.6",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2026.5.0-latest, < 2026.5.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2026.6.0-latest, < 2026.6.1",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2026.7.0-latest, < 2026.7.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-10T15:59:53.965Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, plugins/chat/lib/chat/onebox_handler.rb resolves Chat::Thread by route thread_id independently of the route channel_id before checking whether the user can preview the selected chat channel. An authenticated user can pair a public channel ID with a private thread ID in a /onebox.json request and obtain private thread message content. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."
                }
            ],
            "source": {
                "advisory": "GHSA-8g98-fvfc-9w48",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-11T01:57:32.913192Z",
                                "id": "CVE-2026-72724",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "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": "2026-08-11T01:57:42.639Z"
                }
            }
        ]
    }
}