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CVE-2026-44838 RabbitMQ MQTT Topic Permission Authorization Bypass

🗓️ 27 May 2026 15:03:57Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 67 Views

Authenticated MQTT users can bypass authorization via unescaped client_id in RabbitMQ before 4.2.4.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-44838
27 May 202615:03
–attackerkb
cnnvd
CNNVD
RabbitMQ 安全漏洞
27 May 202600:00
–cnnvd
cve
CVE
CVE-2026-44838
27 May 202615:03
–cve
debiancve
Debian CVE
CVE-2026-44838
27 May 202615:03
–debiancve
euvd
EUVD
EUVD-2026-32548
27 May 202615:03
–euvd
euvd
EUVD
EUVD-2026-87236
25 Sep 202616:30
–euvd
mend
Mend
CVE-2026-44838
27 May 202615:03
–mend
mscve
Microsoft CVE
RabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass
1 Oct 202608:25
–mscve
nvd
NVD
CVE-2026-44838
27 May 202615:16
–nvd
osv_bit
osv_bit
BIT-RABBITMQ-2026-44838 RabbitMQ MQTT Topic Permission Authorization Bypass
29 May 202608:51
–osv_bit
Rows per page
[
  {
    "vendor": "rabbitmq",
    "product": "rabbitmq-server",
    "versions": [
      {
        "version": ">= 4.2.0, < 4.2.4",
        "status": "affected"
      }
    ]
  }
]

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