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Fencer Vulns
high 7.0

CVE-2026-77407 json

RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Struct Fields

published 2026-09-16 53 d ago modified 2026-10-01 38 d ago also GHSA-27gv-rfvv-22mv , GO-2026-6491 , EUVD-2026-80805

cvss
7.0
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, PlainAuth values defined in auth.go retain passwords as exported plaintext fields in Connection.Config.SASL after a successful PLAIN authentication handshake. The Connection.openComplete method in connection.go does not clear those values. Code with access to the Connection object, including reflective loggers, application performance monitoring agents, debugging utilities, and panic handlers, can traverse the configuration and expose the credentials to logs or state captures. The credential remains available for the lifetime of the connection instead of being cleared after authentication. This issue is fixed in version 1.13.0.

Patch / fix

  • go github.com/rabbitmq/amqp091-go 1.13.0
  • golang-github-rabbitmq-amqp091-go Debian 14 1.14.0-1

debian advisories DEBIAN-CVE-2026-77407

  • opentelemetry-collector-contrib hummingbird 1 0.161.0-0.1.hum1

red hat advisories RHSA-2026:68290

  • telegraf Azure Linux 3.0 1.31.0-34

azure linux advisories AZL-103278

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-77407 updated cvss 5.5

github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Fields

  • Red Hat Cryostat 4 cryostat/cryostat-storage-rhel9 Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9 Red Hat OpenShift Serverless openshift-serverless-1/kn-plugin-event-sender-rhel9
    affected: workaround, no fix available “Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.”
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/volsync-rhel9, rhacm2/acm-grafana-rhel9, rhacm2/volsync-operator-bundle
    affected: workaround, no fix available, no fix planned “Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.”
  • Red Hat OpenStack Platform 18.0 rhoso-operators/rabbitmq-cluster-rhel9-operator
    affected: workaround, no fix available “Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.”
  • Red Hat Quay 3 quay/clair-rhel8, quay/clair-rhel9
    affected: workaround, no fix available, no fix planned “Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.”
  • Red Hat Hardened Images opentelemetry-collector-contrib 0.161.0-0.1.hum1
    fixed: vendor fix “Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.” RHSA-2026:68290
  • Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
53 d ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:L
CNA 4.0 7.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:L/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

Affected packages

ecosystem package affected fixed in
go github.com/rabbitmq/amqp091-go
<1.13.0
1.13.0

Affected products

  • rabbitmq amqp091-go

Classification

Weakness
  • CWE-316 Cleartext Storage of Sensitive Information in Memory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.