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vuln-cve/data/2026/67xxx/CVE-2026-67407.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-67407",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-07-29T15:02:20.411Z",
"datePublished": "2026-09-25T16:30:35.252Z",
"dateUpdated": "2026-09-25T17:20:31.333Z"
},
"containers": {
"cna": {
"title": "RabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"lang": "en",
"description": "CWE-862: Missing Authorization",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "HIGH",
"subAvailabilityImpact": "NONE",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-q46v-hrvq-hp24",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-q46v-hrvq-hp24"
},
{
"name": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9"
},
{
"name": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3"
}
],
"affected": [
{
"vendor": "rabbitmq",
"product": "rabbitmq-server",
"versions": [
{
"version": ">= 4.3.2, < 4.3.3",
"status": "affected"
},
{
"version": ">= 4.2.0, < 4.2.9",
"status": "affected"
},
{
"version": ">= 4.1.0, < 4.1.14",
"status": "affected"
},
{
"version": ">= 4.0.0, < 4.0.23",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-25T16:30:35.252Z"
},
"descriptions": [
{
"lang": "en",
"value": "RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3 and 4.2.9 and 4.1.14 and 4.0.23, Incomplete fix for CVE-2026-44838: escaperegexchar/1 does not escape -, leaving room for an MQTT topic permission bypass. the CVE-2026-44838 fix made expandtopicpermission/2 escape regex metacharacters in expanded topic-permission variables (escaperegex(V)), but escaperegexchar/1 escapes \\ ^ $ . | ? + ( ) [ ] { } and omits -. When a topic permission template places {clientid} inside a [...] character class A low-privileged authenticated MQTT user controlling its clientid can broaden topic authorization (read and write) when templates embed {clientid} in a [...] This issue is fixed in versions 4.3.3 and 4.2.9 and 4.1.14 and 4.0.23."
}
],
"source": {
"advisory": "GHSA-q46v-hrvq-hp24",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-25T17:20:18.793859Z",
"id": "CVE-2026-67407",
"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": "2026-09-25T17:20:31.333Z"
}
}
]
}
}