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Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
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Fri, 25 Sep 2026 18:30:00 +0000
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ssvc
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Fri, 25 Sep 2026 16:45:00 +0000
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| Description | 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. | |
| Title | RabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-25T17:20:31.333Z
Reserved: 2026-07-29T15:02:20.411Z
Link: CVE-2026-67407
Updated: 2026-09-25T17:20:22.428Z
Status : Received
Published: 2026-09-25T17:17:12.620
Modified: 2026-09-25T18:17:30.073
Link: CVE-2026-67407
No data.
OpenCVE Enrichment
Updated: 2026-09-25T18:30:17Z