{"id":"CVE-2026-77409","aliases":["AZL-103197","AZL-103281","DEBIAN-CVE-2026-77409","EUVD-2026-80822","GHSA-wxx3-cj7g-w73j","RHSA-2026:68290","UBUNTU-CVE-2026-77409"],"status":"published","title":"RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","severity":{"version":"4.0","score":8.2,"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:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00524,"percentile":0.44704,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2026-09-16T14:48:00Z","modified":"2026-11-02T14:15:39Z","fixes":[{"ecosystem":"Azure Linux:3","package":"telegraf","fixed_in":["1.31.0-34"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"golang-github-rabbitmq-amqp091-go","fixed_in":["1.14.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"keda","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.14.1-19"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"telegraf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.0-34"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.0-1","1.11.0-1","1.12.0-1","1.14.0-1","1.15.0-1","1.5.0-2","1.8.1-1","1.8.1-2","1.9.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.0-1","1.11.0-1","1.12.0-1","1.14.0-1","1.15.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14.0-1"}]}],"versions":["1.10.0-1","1.11.0-1","1.12.0-1"]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"opentelemetry-collector-contrib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.161.0-0.1.hum1"}]}],"bundled":10},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.1-2","1.9.0-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.0-1","1.11.0-1","1.12.0-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"golang-github-rabbitmq-amqp091-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.0-1"]}],"products":[{"vendor":"rabbitmq","product":"amqp091-go"}],"references":[{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-wxx3-cj7g-w73j","tags":["x_refsource_CONFIRM","advisory","article","report"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/349","tags":["x_refsource_MISC","fix","article","report"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/5b0ccbb8d7bc3dfa18129d9b0f9256d656809494","tags":["x_refsource_MISC","fix","article","report"]},{"url":"https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0","tags":["x_refsource_MISC","web","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77409","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77409.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-77409","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:68290","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-81872","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77404","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77412","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77403","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77410","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77409","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77406","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77407","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-93450","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-63209","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_68290.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543236","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63209","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63209","tags":["advisory"]},{"url":"https://github.com/klauspost/compress/commit/539243b8823ee8f03e49969823d57c348c917536","tags":["article"]},{"url":"https://github.com/klauspost/compress/releases/tag/v1.18.7","tags":["article"]},{"url":"https://github.com/klauspost/compress/security/advisories/GHSA-259r-337f-4rfw","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535498","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77403","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77403","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/2e0a919b89f337dbf58db2bb34ab206dac354a06","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/353","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-xwwf-m8fg-p9q2","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535489","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77404","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77404","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/743d488e46955fe7ffc55506fe2c401d01216783","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/352","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-465g-fh3v-9jw4","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535493","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77406","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77406","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/3b879e1d1d25b544e26b3bc3d7db3213203c0f3b","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/351","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-rm6m-hrcw-jw33","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535487","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77407","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77407","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/fa013b8447eb60988db3c9281ff6b981e4d2fb4f","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/350","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-27gv-rfvv-22mv","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535494","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77409","tags":["advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535500","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77410","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77410","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/91b65fa0096a99a580cf51a31b24028ff1c60382","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/346","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-r9c8-gcjp-xfwh","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535499","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-77412","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77412","tags":["advisory"]},{"url":"https://github.com/rabbitmq/amqp091-go/commit/669b42bf7b1db76bc6d4973e3634247f680accbf","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/pull/344","tags":["article"]},{"url":"https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-4v58-74mf-rjx3","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535727","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81872","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81872","tags":["advisory"]},{"url":"https://github.com/open-telemetry/opentelemetry-go/commit/ba71b09e6ed272e93a669aeaec1e98b1df4cc582","tags":["article"]},{"url":"https://github.com/open-telemetry/opentelemetry-go/issues/6797","tags":["article"]},{"url":"https://github.com/open-telemetry/opentelemetry-go/pull/8620","tags":["article"]},{"url":"https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v0.21.0","tags":["article"]},{"url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-hjf4-fphr-2h65","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2538979","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93450","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93450","tags":["advisory"]},{"url":"https://github.com/go-openapi/swag","tags":["article"]},{"url":"https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/adapter.go#L68","tags":["article"]},{"url":"https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/ordered_map.go#L214","tags":["article"]},{"url":"https://github.com/go-openapi/swag/commit/0c24346ced59a25811e8694a915e7131d25ccb0e","tags":["article"]},{"url":"https://github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/go-openapi-swag-jsonutils-before-0.27.1-uncontrolled-recursion-in-ordered-json-marshal-and-unmarshal","tags":["article"]},{"url":"https://ubuntu.com/security/CVE-2026-77409","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-77409","title":"RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T14:48:00.669Z","modified":"2026-09-18T18:03:12.744Z","cvss":[{"version":"4.0","score":8.2,"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:L","level":"high","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:20:16.072351Z"}],"euvd":[{"id":"EUVD-2026-80822","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T14:48:00Z","modified":"2026-09-18T18:03:12Z","cvss":[{"version":"4.0","score":8.2,"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:L","level":"high"}],"updated_at":"2026-11-02T17:28:07.943492Z"}],"nvd":[{"id":"CVE-2026-77409","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T15:17:50.293Z","modified":"2026-09-24T21:16:28.12Z","cvss":[{"version":"4.0","score":8.2,"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:L/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","level":"high","assessor":"secondary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:12:48.630594Z"}],"osv":[{"id":"CVE-2026-77409","title":"RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T14:48:00.669Z","modified":"2026-10-28T02:30:40.144403258Z","cvss":[{"version":"4.0","score":8.2,"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:L","level":"high"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:45:17.102988Z"},{"id":"DEBIAN-CVE-2026-77409","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T15:17:50.293Z","modified":"2026-09-25T08:47:27.012207929Z","cvss":[{"version":"4.0","score":8.2,"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:L/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","level":"high"}],"updated_at":"2026-11-02T15:46:03.502256Z"},{"id":"RHSA-2026:68290","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-09-22T10:19:11Z","modified":"2026-10-20T10:43:37.203533689Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"UBUNTU-CVE-2026-77409","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T15:17:00Z","modified":"2026-10-28T20:15:22.905192441Z","cvss":[{"version":"4.0","score":8.2,"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:L","level":"high"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"AZL-103197","title":"CVE-2026-77409 affecting package keda 2.14.1-19","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T15:17:50Z","modified":"2026-10-31T05:32:45Z","updated_at":"2026-11-02T15:28:00.794214Z"},{"id":"AZL-103281","title":"CVE-2026-77409 affecting package telegraf for versions less than 1.31.0-34","description":"RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.","status":"published","published":"2026-09-16T15:17:50Z","modified":"2026-11-02T14:15:39.451773654Z","updated_at":"2026-11-02T15:28:00.794214Z"}]}}