{"cve":"CVE-2026-77412","nvd":{"published":"2026-09-16T15:17:50.707","modified":"2026-09-23T18:19:19.803","status":"Awaiting Analysis","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":{"vector":"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","score":8.9},"cvss_v3":null,"cwes":["CWE-681"],"references":["https://github.com/rabbitmq/amqp091-go/commit/669b42bf7b1db76bc6d4973e3634247f680accbf","https://github.com/rabbitmq/amqp091-go/pull/344","https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0","https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-4v58-74mf-rjx3"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-77412","score":0.00524,"percentile":0.4444,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4v58-74mf-rjx3","url":"https://osv.dev/vulnerability/GHSA-4v58-74mf-rjx3","summary":"RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client","modified":"2026-10-01T20:55:54.975644527Z","packages":[{"ecosystem":"Go","name":"github.com/rabbitmq/amqp091-go","purl":"pkg:golang/github.com/rabbitmq/amqp091-go","ranges":["<1.13.0"],"fixed":["1.13.0"]}]},{"id":"GO-2026-6494","url":"https://osv.dev/vulnerability/GO-2026-6494","summary":"RabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP Client in github.com/rabbitmq/amqp091-go","modified":"2026-10-01T20:45:11.239252691Z","packages":[{"ecosystem":"Go","name":"github.com/rabbitmq/amqp091-go","purl":"pkg:golang/github.com/rabbitmq/amqp091-go","ranges":["<1.13.0"],"fixed":["1.13.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}