CVE-2026-77412RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client
- 8.9HighCVSS base score
- 0.52%Exploitation in 30 daysEPSS · top 55% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 27 days later
· 27 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | High8.9 | 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 |
| NVDNVD · Awaiting Analysis | 4.0 | High8.9 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.52% · top 55% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.9.
Affected products
- affected < 1.13.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/rabbitmq/amqp091-goGHSA-4v58-74mf-rjx3 (opens in a new tab)
References
References4
- https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-4v58-74mf-rjx3 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/rabbitmq/amqp091-go/pull/344 (opens in a new tab)x_refsource_MISC
- https://github.com/rabbitmq/amqp091-go/commit/669b42bf7b1db76bc6d4973e3634247f680accbf (opens in a new tab)x_refsource_MISC
- https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80819 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4v58-74mf-rjx3 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-77412)Record last updated .