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vuln-cve/data/2026/72xxx/CVE-2026-72724.json
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{
"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"
}
}
]
}
}