Vulnerability · Published Sep 16, 2026 · Assigned by GitHub_M
CVE-2026-77407RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Struct Fields
High 7.0
In plain English
A high-severity security flaw in amqp091-go from rabbitmq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-github-rabbitmq-amqp091-go | no fix listed | DEBIAN-CVE-2026-77407 |
| Debian:13 | golang-github-rabbitmq-amqp091-go | no fix listed | DEBIAN-CVE-2026-77407 |
| Debian:14 | golang-github-rabbitmq-amqp091-go | 1.14.0-1 | DEBIAN-CVE-2026-77407 |
| Go | github.com/rabbitmq/amqp091-go | 1.13.0 | GO-2026-6491 |
| Go | github.com/rabbitmq/amqp091-go | 1.13.0 | GHSA-27gv-rfvv-22mv |
| Ubuntu:24.04:LTS | golang-github-rabbitmq-amqp091-go | no fix listed | UBUNTU-CVE-2026-77407 |
| Ubuntu:26.04:LTS | golang-github-rabbitmq-amqp091-go | no fix listed | UBUNTU-CVE-2026-77407 |
| Ubuntu:26.10 | golang-github-rabbitmq-amqp091-go | no fix listed | UBUNTU-CVE-2026-77407 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| rabbitmq | amqp091-go | < 1.13.0 |
Weakness: CWE-316 · Vector: 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
References
- https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-27gv-rfvv-22mv x_refsource_CONFIRM
- https://github.com/rabbitmq/amqp091-go/pull/350 x_refsource_MISC
- https://github.com/rabbitmq/amqp091-go/commit/fa013b8447eb60988db3c9281ff6b981e4d2fb4f x_refsource_MISC
- https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0 x_refsource_MISC