CVE-2026-77411Critical· 9.5▾ MidnightRabbitMQ 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…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 52.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/rabbitmq/amqp091-go < 1.13.0Patched in:
github.com/rabbitmq/amqp091-go 1.13.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-77408Critical· 9.1RabbitMQ amqp091-go is a Go AMQP 0.9.1 client
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CVE-2026-77403High· 8.9RabbitMQ amqp091-go is a Go AMQP 0.9.1 client
CVE-2026-77406High· 8.2RabbitMQ amqp091-go is a Go AMQP 0.9.1 client
CVE-2026-77410High· 8.9RabbitMQ amqp091-go is a Go AMQP 0.9.1 client
CVE-2026-77404High· 8.7RabbitMQ amqp091-go is a Go AMQP 0.9.1 client