{"id":"CVE-2026-77405","title":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client","summary":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, tlsConfigFromURI in uri.go creates tls.Config values without setting MinVersion to tls.VersionTLS12. Builds using a Go runtime whose default permits TLS 1.0 or TLS 1.1 can t…","severity":"critical","cvss":9.4,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:L/SA:N","cwe":["CWE-326","CWE-316"],"vendor":"rabbitmq","product":"amqp091-go","affected":["amqp091-go < 1.13.0"],"patched":["github.com/rabbitmq/amqp091-go 1.13.0"],"published":"2026-09-16","updated":"2026-09-24","sourceUpdated":"2026-09-24T21:16:28.120","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77405","references":[{"url":"https://github.com/rabbitmq/amqp091-go/commit/c9fd433ecac2e557919e51acc9d809390c402c6e","label":"security-advisories@github.com"},{"url":"https://github.com/rabbitmq/amqp091-go/pull/355","label":"security-advisories@github.com"},{"url":"https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0","label":"security-advisories@github.com"},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-33mj-cw25-m34h","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77405"},{"url":"https://github.com/advisories/GHSA-33mj-cw25-m34h"},{"url":"https://github.com/rabbitmq/amqp091-go"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77405.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-77405"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535502"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77405"}],"tags":["nvd","cve.org","ghsa","go","osv","csaf","vex","red-hat","score-dispute"],"epss":0.00282,"epssPercentile":0.20561,"aliases":["GHSA-33mj-cw25-m34h","GO-2026-6492"],"ecosystem":"go","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-18T17:59:04.727483Z"},"cvssSource":"cna","ingestedAt":"2026-09-16T14:57:28.034Z","scores":{"cna":9.4,"vendor":7.4},"slug":"CVE-2026-77405","body":"## Overview\n\nRabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, tlsConfigFromURI in uri.go creates tls.Config values without setting MinVersion to tls.VersionTLS12. Builds using a Go runtime whose default permits TLS 1.0 or TLS 1.1 can therefore negotiate an obsolete protocol version when connecting through an amqps URI. A network attacker able to influence TLS negotiation with such a legacy build may weaken transport protection for AMQP messages and credentials. This issue is fixed in version 1.13.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-77405)\n\nAffected packages:\n\n- `github.com/rabbitmq/amqp091-go < 1.13.0`\n\nPatched in:\n\n- `github.com/rabbitmq/amqp091-go 1.13.0`\n\nSource: https://github.com/advisories/GHSA-33mj-cw25-m34h\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Cryostat 4, Multicluster Global Hub, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, Red Hat Quay 3 · no fix planned: Multicluster Global Hub, Cryostat 4, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77405.json)","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":51.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}