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rabbitmq-server — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-67237

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.

Products
rabbitmq-server
Affected versions
4.0.5-10, 4.0.5-11, 4.0.5-12, 4.0.5-13, 4.0.5-14, 4.0.5-6, 4.0.5-8, 4.0.5-9, 4.3.0-1, 4.3.0-2, 4.3.0-3
Fixed versions
4.3.2-1
CVEs
CVE-2026-67237
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 02:15 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-67237

core-osv · Original source

Published 25 Sept 2026, 17:17 UTC

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.

osv:DEBIAN-CVE-2026-67237

rabbitmq-server

Fixed versions: 4.3.2-1

Complete source record
{
  "id": "759ad42fec439fadb46b6ddf4a3af622b9e304c9c78d159a859709e0ccc7548d",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-67237",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-67237",
    "summary": "RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.",
    "evidence": "osv:DEBIAN-CVE-2026-67237",
    "products": [
      {
        "name": {
          "value": "rabbitmq-server",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.3.2-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "4.0.5-10",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-11",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-12",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-13",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-14",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.0.5-9",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.3.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.3.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.3.0-3",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "DEBIAN-CVE-2026-67237",
      "aliases": [
        "DEBIAN-CVE-2026-67237"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4.3.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rabbitmq-server",
            "purl": "pkg:deb/debian/rabbitmq-server?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "4.0.5-10",
            "4.0.5-11",
            "4.0.5-12",
            "4.0.5-13",
            "4.0.5-14",
            "4.0.5-6",
            "4.0.5-8",
            "4.0.5-9",
            "4.3.0-1",
            "4.3.0-2",
            "4.3.0-3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67237.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:05:41.241477800Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-67237"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-67237"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-67237",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 424532,
  "published_at": "2026-09-25T17:17:11.883+00:00"
}