CVE-2026-66070 (GCVE-0-2026-66070)
Vulnerability from cvelistv5
Published
2026-09-23 19:59
Modified
2026-09-24 14:17
Severity ?
7.6 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Summary
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, match_origin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with Access-Control-Allow-Credentials. The affected code is rabbit_mgmt_cors.erl. When the management plugin is configured with a wildcard CORS origin (cors_allow_origins = ""), the handler reflects the request Origin back in Access-Control-Allow-Origin and also sends Access-Control-Allow-Credentials: true. A malicious web page that a signed-in administrator visits can then use that administrator's cached HTTP Basic credentials to issue authenticated, state-changing requests to the management API. Preconditions include The management plugin is configured with the wildcard cors_allow_origins = "*", which is an explicit operator misconfiguration A target administrator has a cached HTTP Basic-auth session in the browser. This issue is fixed in versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6.
References
Impacted products
Vendor Product Version
rabbitmq rabbitmq-server Version: >= 3.13.0, < 3.13.17
Version: >= 4.0.0, < 4.0.22
Version: >= 4.1.0, < 4.1.13
Version: >= 4.2.0, < 4.2.6
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