CVE-2026-67236

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Source
https://cve.org/CVERecord?id=CVE-2026-67236
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67236.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-67236
Aliases
Downstream
Published
2026-09-25T15:59:10Z
Modified
2026-10-22T10:36:07Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
RabbitMQ: Plaintext username:password stored in an insecure cookie after successful POST /login
Details

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, a successful POST /login caused is_authorized/2 to set an auth cookie containing base64-encoded username:password credentials without HttpOnly, Secure, SameSite, or expiration protections. Because base64 is encoding rather than encryption, an attacker with same-origin cross-site scripting, an HTTP-readable network position, or local access to the browser cookie store could recover the actual login credentials; older browsers that treated an absent SameSite attribute as None also sent the cookie cross-site. This issue is fixed in versions 4.2.8 and 4.3.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-312"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67236.json"
}
References

Affected packages

Git / github.com/rabbitmq/rabbitmq-server

Affected ranges

Type
GIT
Repo
https://github.com/rabbitmq/rabbitmq-server
Events
Introduced
95c501fbad76c66156346cf364d158d6e30aa4d9
Fixed
8b611c9f4bd2d1615ef855cdf1459da3196d4d3c
Introduced
1929eeadf9b2bac12c5434fb56884ef27370580e
Fixed
a509158b1b1e21c892a7f1dacbe0d158076dc7b8
Fixed
df9e7f4c0afd311a672705f020d301efad355745
Fixed
edf1fbc7217aaf736955d2e13c9534901a2e0778
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "4.2.0"
                },
                {
                    "fixed": "4.2.8"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "4.3.0"
                },
                {
                    "fixed": "4.3.2"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "df9e7f4c0afd311a672705f020d301efad355745"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "edf1fbc7217aaf736955d2e13c9534901a2e0778"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v4.2.8",
            "range": [
                {
                    "fixed": "8b611c9f4bd2d1615ef855cdf1459da3196d4d3c"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "v4.3.2",
            "range": [
                {
                    "fixed": "a509158b1b1e21c892a7f1dacbe0d158076dc7b8"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.2.6
v4.2.7
v4.3.0
v4.3.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67236.json"