BIT-rabbitmq-2026-67234

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/rabbitmq/BIT-rabbitmq-2026-67234.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-rabbitmq-2026-67234
Aliases
Published
2026-10-01T09:33:28Z
Modified
2026-10-01T10:11:09Z
Summary
RabbitMQ: Non-RFC-conformant cookie name when clearing the auth-mechanism preference
Details

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, get_auth_mechanism/1 used term_to_binary/1 on the strict_auth_mechanism or preferred_auth_mechanism atom when clearing the corresponding cookie, producing a non-ASCII cookie name that violates RFC 6265 and can prevent the browser from deleting the preference. The issue is not directly exploitable for code execution or data exfiltration; its security relevance is limited to stale authentication-mechanism preferences persisting across logout and login cycles. This issue is fixed in versions 4.2.8 and 4.3.2.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:vmware:rabbitmq:*:*:*:*:*:*:*:*"
    ],
    "severity": "Low"
}
References

Affected packages

Bitnami / rabbitmq

Package

Name
rabbitmq
Purl
pkg:bitnami/rabbitmq

Severity

  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
4.2.0
Fixed
4.2.8
Introduced
4.3.0
Fixed
4.3.2

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/rabbitmq/BIT-rabbitmq-2026-67234.json"