Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The amqp091-go library for Go, versions before 1.13.0, is vulnerable. A malicious or compromised AMQP server can send a message with an inflated body size, causing the client to attempt a huge memory allocation, which can exhaust system memory and crash the client process. No special privileges are needed beyond the server being able to deliver messages to the client. Upgrade to version 1.13.0 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.9 | High | 4.0 | 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 | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0052, the 44th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:12 UTC First seen by agentprime
- 31 Oct 2026, 14:12 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-r9c8-gcjp-xfwh
- OSV: GHSA-r9c8-gcjp-xfwh
- github.com/rabbitmq/amqp091-go/security/advisories/GHSA-r9c8-gcjp-xfwh
- nvd.nist.gov/vuln/detail/CVE-2026-77410
- github.com/rabbitmq/amqp091-go/pull/346
- github.com/rabbitmq/amqp091-go/commit/91b65fa0096a99a580cf51a31b24028ff1c60382
- github.com/rabbitmq/amqp091-go
- github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0