High severity · published Aug 26, 2026
CVE-2026-79921
amqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload
8.9
CVSS
0.5%
EPSS
No
On KEV
Description
amqp091-go is a Go AMQP 0.9.1 client. Before version 1.13.0, a compromised or malicious AMQP broker can force the client to allocate resources for and process content body frames that exceed the negotiated frame_max limit. This can lead to unexpected memory consumption or application-layer denial of service (DoS), bypassing the protocol's built-in framing constraints. Version 1.13.0 contains a fix. No known workarounds are available.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AM
amqp091-go · rabbitmq
< 1.13.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-79921
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-79921
github.com
https://github.com/rabbitmq/amqp091-go/commit/6beb7b51f59e46ddcf8066ad498dad32491d3be0
github.com
https://github.com/rabbitmq/amqp091-go/pull/353
github.com
https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0
github.com
https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-6c5v-hqjr-5xxp
More from amqp091-go
9.5
CVE-2026-77411
RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr
9.4
CVE-2026-77405
RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser
9.1
CVE-2026-77408
RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow
8.9
CVE-2026-77412
RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client
8.9
CVE-2026-77410
RabbitMQ amqp091-go: Resource Exhaustion (OOM) via Unbounded Body Buffer Allocation