CVE-2026-77412: CWE-681: Incorrect Conversion between Numeric Types in rabbitmq amqp091-go
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, readField in read.go reads the length of an AMQP byte-array field with type tag x into a signed int32 and passes the value directly to make when allocating the field buffer. A malicious or compromised broker can encode a value such as 0xFFFFFFFF, which becomes -1 and causes a len out of range runtime panic. The panic escapes the network reader goroutine and terminates the client process, including during connection.start server properties or message header table parsing. This issue is fixed in version 1.13.0.
AI Analysis
Technical Summary
The RabbitMQ amqp091-go client (AMQP 0.9.1) before version 1.13.0 has a vulnerability in the readField function in read.go. The function reads the length of an AMQP byte-array field as a signed int32 and uses this value directly to allocate a buffer with make. A malicious or compromised broker can send a length value such as 0xFFFFFFFF, which converts to -1 in signed int32, causing a runtime panic due to an invalid length. This panic escapes the network reader goroutine and terminates the client process, including during connection.start server properties or message header table parsing. The vulnerability is addressed and fixed in version 1.13.0.
Potential Impact
Exploitation of this vulnerability allows a malicious or compromised AMQP broker to cause a denial of service by terminating the client process through a runtime panic. This affects client stability and availability but does not indicate direct code execution or data compromise. The impact is high due to the client process termination and potential disruption of messaging services.
Mitigation Recommendations
Upgrade the RabbitMQ amqp091-go client to version 1.13.0 or later, where this issue is fixed. No other mitigations are indicated or required. Patch status is confirmed fixed in 1.13.0.
CVE-2026-77412: CWE-681: Incorrect Conversion between Numeric Types in rabbitmq amqp091-go
Description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, readField in read.go reads the length of an AMQP byte-array field with type tag x into a signed int32 and passes the value directly to make when allocating the field buffer. A malicious or compromised broker can encode a value such as 0xFFFFFFFF, which becomes -1 and causes a len out of range runtime panic. The panic escapes the network reader goroutine and terminates the client process, including during connection.start server properties or message header table parsing. This issue is fixed in version 1.13.0.
CVSS v4.0
Score 8.9high
Affected software
rabbitmq
amqp091-go
pkg:github/rabbitmq/amqp091-goRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The RabbitMQ amqp091-go client (AMQP 0.9.1) before version 1.13.0 has a vulnerability in the readField function in read.go. The function reads the length of an AMQP byte-array field as a signed int32 and uses this value directly to allocate a buffer with make. A malicious or compromised broker can send a length value such as 0xFFFFFFFF, which converts to -1 in signed int32, causing a runtime panic due to an invalid length. This panic escapes the network reader goroutine and terminates the client process, including during connection.start server properties or message header table parsing. The vulnerability is addressed and fixed in version 1.13.0.
Potential Impact
Exploitation of this vulnerability allows a malicious or compromised AMQP broker to cause a denial of service by terminating the client process through a runtime panic. This affects client stability and availability but does not indicate direct code execution or data compromise. The impact is high due to the client process termination and potential disruption of messaging services.
Mitigation Recommendations
Upgrade the RabbitMQ amqp091-go client to version 1.13.0 or later, where this issue is fixed. No other mitigations are indicated or required. Patch status is confirmed fixed in 1.13.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-20T19:55:27.024Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaaaf7355bf5e2cf5c3ac74
Added to database: 09/16/2026, 15:02:11 UTC
Last enriched: 09/16/2026, 15:16:27 UTC
Last updated: 09/16/2026, 15:52:47 UTC
Views: 6
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