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TI-2026-47702 Aliases CVE-2026-67421

RabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth Error Handling

Priority MEDIUM 54CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-862.

Summary

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, RabbitMQ Management rendered an AMQP authorization-error reason containing an attacker-controlled queue name as HTML when the OAuth management UI was enabled. Exploitation requires an attacker with queue configure permission, a management administrator who can see but cannot read that queue, and the administrator clicking Get Message(s). A queue name containing a base element can then retarget the automatic relative refresh because the Content Security Policy omits base-uri and connect-src, and an attacker endpoint that permits the management origin through CORS can receive the victim's Authorization header. This issue is fixed in versions 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0028 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial rabbitmq-server (rabbitmq): 3.13.19, 4.0.24, 4.1.15 +2Red Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rabbitmqrabbitmq-server3.13.0 to before 3.13.19; 4.0.0 to before 4.0.24; 4.1.0 to before 4.1.15; 4.2.0 to before 4.2.10; 4.3.0 to before 4.3.53.13.19, 4.0.24, 4.1.15, 4.2.10, 4.3.5Patch availableCNA
  • rabbitmq-server Vendorrabbitmq Affected 3.13.0 to before 3.13.19; 4.0.0 to before 4.0.24; 4.1.0 to before 4.1.15; 4.2.0 to before 4.2.10; 4.3.0 to before 4.3.5 Fixed in 3.13.19, 4.0.24, 4.1.15, 4.2.10, 4.3.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*3.13.0 to before 3.13.9; 4.0.0 to before 4.0.24; 4.1.0 to before 4.1.15; 4.2.0 to before 4.2.10; 4.3.0 to before 4.3.5VulnerableBroadcom
  • cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:* Versions 3.13.0 to before 3.13.9; 4.0.0 to before 4.0.24; 4.1.0 to before 4.1.15; 4.2.0 to before 4.2.10; 4.3.0 to before 4.3.5 Vulnerable ·Broadcom

Remediation

  • Fix · CNA rabbitmq-server (rabbitmq) Fixed in 3.13.19, 4.0.24, 4.1.15, 4.2.10, 4.3.5

Red Hat 1 advisory

  • RHSA-2026:67552 Released 2026-09-15 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images rabbitmq-server4.3-4.3.6-1.hum1@aarch64, rabbitmq-server4.3-4.3.6-1.hum1@src, rabbitmq-server4.3-4.3.6-1.hum1@x86_64

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Hardened ImagesAffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 16.2AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 17.1AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 18.0AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:67552

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67421
  2. 2026-10-06 CVSS score added · NVD
  3. 2026-10-18 Fix available: RHSA-2026:67552 · Red Hat
  4. 2026-10-18 Fix available: Red Hat Hardened Images · Red Hat
  5. 2026-10-18 CVSS score added · Red Hat

References

Exploit 1

Patch 1

Other 1

  • TI-2026-41154 Improper authentication in rabbitmq-server CVSS 3.1CRITICAL 10.0
  • TI-2026-41149 RabbitMQ: UNC SSRF affecting the management UI on Windows CVSS 3.1CRITICAL 10.0
  • TI-2026-41158 Resource allocation without limits in rabbitmq-server CVSS 3.1HIGH 7.5
  • TI-2026-47695 RabbitMQ: OAuth2 Client Secret Exposed via Unauthenticated JavaScript Endpoint CVSS 4.0HIGH 8.2
  • TI-2026-47694 RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS CVSS 4.0HIGH 8.2
  • TI-2026-45167 RabbitMQ Java client: Unvalidated Class.forName in JSON-RPC ProcedureDescription enables arbitrary class loading CVSS 4.0HIGH 7.5
See all 100 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences