CVE-2026-77412RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.9 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- Weakness (CWE)
- CWE-681
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rabbitmq amqp091-go rabbitmq:amqp091_go (from the name) | before 1.13.0 | CNA record |
References
- https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-4v58-74mf-rjx3x-refsource-confirm
- https://github.com/rabbitmq/amqp091-go/pull/344x-refsource-misc
- https://github.com/rabbitmq/amqp091-go/commit/669b42bf7b1db76bc6d4973e3634247f680accbfx-refsource-misc
- https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.