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CVE-2026-67407 RabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass

🗓️ 25 Sep 2026 16:30:35Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 10 Views

Authenticated MQTT users can bypass permissions in RabbitMQ 4.0.0-4.3.3 via {clientid} regex.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-67407
1 Jan 197600:00
–cve
debiancve
Debian CVE
CVE-2026-67407
1 Jan 197600:00
–debiancve
euvd
EUVD
EUVD-2026-87236
25 Sep 202616:30
–euvd
nvd
NVD
CVE-2026-67407
25 Sep 202617:17
–nvd
osv
OSV
DEBIAN-CVE-2026-67407
25 Sep 202617:17
–osv
vulnrichment
Vulnrichment
CVE-2026-67407 RabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass
25 Sep 202616:30
–vulnrichment
[
  {
    "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"
      }
    ]
  }
]

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