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TI-2026-54001 Aliases CVE-2026-77411GHSA-c5pq-fr2g-9jpf

RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr

Priority MEDIUM 43CWE-754Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, readLongstr in read.go returns an empty string and a nil error when a declared AMQP longstr length exceeds 0x7FFFFFFF instead of returning ErrSyntax. The function leaves the declared field bytes unread, while readTable treats the operation as successful and continues parsing from the wrong offset. A malicious or compromised broker can provide an oversized longstr in a table field and desynchronize subsequent AMQP parsing, causing attacker-controlled trailing bytes to be interpreted as later fields or frames and disrupting connection integrity and availability. This issue is fixed in version 1.13.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00524 44th percentileScored 2026-11-07
Fix Partial amqp091-go (rabbitmq): 1.13.0github.com/rabbitmq/amqp091-go (Go): 1.13.0Red Hat: 3 advisoriesRed Hat: 3 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
rabbitmqamqp091-gobefore 1.13.01.13.0Patch availableCNA
—github.com/rabbitmq/amqp091-go (Go)before 1.13.01.13.0Patch availableGHSA-c5pq-fr2g-9jpf
  • amqp091-go Vendorrabbitmq Affected before 1.13.0 Fixed in 1.13.0 Patch available CNA
  • github.com/rabbitmq/amqp091-go (Go) Vendor— Affected before 1.13.0 Fixed in 1.13.0 Patch available GHSA-c5pq-fr2g-9jpf

Remediation

  • Fix · CNA amqp091-go (rabbitmq) Fixed in 1.13.0
  • Fix · GHSA-c5pq-fr2g-9jpf github.com/rabbitmq/amqp091-go (Go) Fixed in 1.13.0 Advisory →

Red Hat 3 advisories

  • RHSA-2026:95517 Released 2026-11-05 · Red Hat rating Important
    Multicluster Global Hub 1.7.4 security update
    • Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +1
  • RHSA-2026:92307 Released 2026-10-29 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.13.14 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +16
  • RHSA-2026:73523 Released 2026-09-29 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images opentelemetry-collector-contrib-0.162.0-0.1.hum1@aarch64, opentelemetry-collector-contrib-0.162.0-0.1.hum1@src, opentelemetry-collector-contrib-0.162.0-0.1.hum1@x86_64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat OpenStack Platform 18.0AffectedNo fix yet
Red Hat Quay 3AffectedNo fix yet
Multicluster Global Hub 1.7.4Fixed RHSA-2026:95517
Red Hat Advanced Cluster Management for Kubernetes 2.13Fixed RHSA-2026:92307
Red Hat Hardened ImagesFixed RHSA-2026:73523
Not affected: 7 products
  • Cryostat 4
  • Custom Metric Autoscaler operator for Red Hat Openshift
  • Multicluster Global Hub 1.7.4
  • OpenShift Serverless
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Advanced Cluster Management for Kubernetes 2.13
  • Red Hat Quay 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77411
  2. 2026-10-03 Alias added: GHSA-c5pq-fr2g-9jpf
  3. 2026-10-10 Affected versions changed · Red Hat
  4. 2026-10-10 CVSS score added · Red Hat
  5. 2026-10-13 Fix available: RHSA-2026:73523 · Red Hat
  6. 2026-10-13 Fix available: Red Hat Hardened Images · Red Hat
  7. 2026-10-16 Affected versions changed · Red Hat
  8. 2026-10-18 Affected versions changed · Red Hat
  9. 2026-10-24 Affected versions changed · Red Hat
  10. 2026-10-30 Fix available: RHSA-2026:92307 · Red Hat
  11. 2026-10-30 Fix available: Red Hat Advanced Cluster Management for Kubernetes 2.13 · Red Hat
  12. 2026-11-06 Fix available: Multicluster Global Hub 1.7.4 · Red Hat
  13. 2026-11-06 Fix available: RHSA-2026:95517 · Red Hat

References

Advisory 1

Other 5

  • 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