{"id":"CVE-2026-44235","aliases":["AZL-105084","BIT-rabbitmq-c-2026-44235","DEBIAN-CVE-2026-44235","EUVD-2026-82333","GHSA-9mmv-r8g3-qp46","MGASA-2026-0314","OESA-2026-2713","UBUNTU-CVE-2026-44235","USN-8437-1","USN-8724-1"],"status":"published","title":"rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00309,"percentile":0.24011,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-191"],"published":"2026-06-11T00:00:00Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Bitnami","package":"rabbitmq-c","fixed_in":["0.16.0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"librabbitmq","fixed_in":["0.11.0-1+deb12u2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"librabbitmq","fixed_in":["0.15.0-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"librabbitmq","fixed_in":["0.16.0-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"librabbitmq","fixed_in":["0.4.1-1ubuntu0.1~esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"librabbitmq","fixed_in":["0.7.1-1ubuntu0.2+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"librabbitmq","fixed_in":["0.8.0-1ubuntu0.18.04.2+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"librabbitmq","fixed_in":["0.10.0-1ubuntu0.20.04.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"librabbitmq","fixed_in":["0.10.0-1ubuntu2.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"librabbitmq","fixed_in":["0.11.0-1ubuntu0.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:25.10","package":"librabbitmq","fixed_in":["0.15.0-1ubuntu0.25.10.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"librabbitmq","fixed_in":["0.15.0-1ubuntu0.26.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.14.0-1"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"rabbitmq-c","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.16.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.0-1+deb12u2"}]}],"versions":["0.11.0-1","0.11.0-1+deb12u1"]},{"source":"osv","ecosystem":"Debian:13","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1+deb13u1"}]}],"versions":["0.15.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.0-1"}]}],"versions":["0.15.0-1"]},{"source":"osv","ecosystem":"Mageia:10","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-2.1.mga10"}]}],"bundled":3},{"source":"osv","ecosystem":"Mageia:9","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.0-1.1.mga9"}]}],"bundled":3},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP4","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.0-8.oe2003sp4"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.0-10.oe2203sp4"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.0-3.oe2403sp1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.0-3.oe2403sp3"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.1-1ubuntu0.1~esm2"}]}],"versions":["0.3.0-1","0.4.1-1","0.4.1-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-1ubuntu0.2+esm1"}]}],"versions":["0.5.2-2","0.7.1-1","0.7.1-1ubuntu0.1","0.7.1-1ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0-1ubuntu0.18.04.2+esm1"}]}],"versions":["0.8.0-1","0.8.0-1build1","0.8.0-1ubuntu0.18.04.1","0.8.0-1ubuntu0.18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.0-1ubuntu0.20.04.1~esm1"}]}],"versions":["0.9.0-0.2","0.9.0-0.2ubuntu1","0.10.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.0-1ubuntu2.1"}]}],"versions":["0.10.0-1","0.10.0-1build1","0.10.0-1ubuntu1","0.10.0-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.0-1ubuntu0.1"}]}],"versions":["0.11.0-1","0.11.0-1build1","0.11.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu0.25.10.1"}]}],"versions":["0.15.0-1","0.15.0-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu0.26.04.1"}]}],"versions":["0.15.0-1build1","0.15.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.0-1ubuntu2.1"}]}],"versions":["0.10.0-1","0.10.0-1build1","0.10.0-1ubuntu1","0.10.0-1ubuntu2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.0-1ubuntu0.1"}]}],"versions":["0.11.0-1","0.11.0-1build1","0.11.0-1build2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu0.25.10.1"}]}],"versions":["0.15.0-1","0.15.0-1build1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu0.26.04.1"}]}],"versions":["0.15.0-1build1","0.15.0-1build2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.1-1ubuntu0.1~esm2"}]}],"versions":["0.3.0-1","0.4.1-1","0.4.1-1ubuntu0.1~esm1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-1ubuntu0.2+esm1"}]}],"versions":["0.5.2-2","0.7.1-1","0.7.1-1ubuntu0.1","0.7.1-1ubuntu0.2"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0-1ubuntu0.18.04.2+esm1"}]}],"versions":["0.8.0-1","0.8.0-1build1","0.8.0-1ubuntu0.18.04.1","0.8.0-1ubuntu0.18.04.2"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.0-1ubuntu0.20.04.1~esm1"}]}],"versions":["0.9.0-0.2","0.9.0-0.2ubuntu1","0.10.0-1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.0-1ubuntu2.2"}]}],"versions":["0.10.0-1","0.10.0-1build1","0.10.0-1ubuntu1","0.10.0-1ubuntu2","0.10.0-1ubuntu2.1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.0-1ubuntu0.2"}]}],"versions":["0.11.0-1","0.11.0-1build1","0.11.0-1build2","0.11.0-1ubuntu0.1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"librabbitmq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu0.26.04.2"}]}],"versions":["0.15.0-1build1","0.15.0-1build2","0.15.0-1ubuntu0.26.04.1"],"bundled":5}],"products":[{"vendor":"alanxz","product":"rabbitmq-c"}],"references":[{"url":"https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-9mmv-r8g3-qp46","tags":["x_refsource_CONFIRM","exploit","web","advisory","report"]},{"url":"https://github.com/alanxz/rabbitmq-c/pull/878","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/alanxz/rabbitmq-c/commit/1d3afbb056fee5cc9ea05680bf32288715d0d802","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/alanxz/rabbitmq-c/releases/tag/v0.16.0","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44235","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44235.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-44235","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0314.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35702","tags":["report"]},{"url":"https://lists.debian.org/debian-security-announce/2026/msg00254.html","tags":["web"]},{"url":"https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-jh48-qjf5-fx5v","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RVOR7C3KDMOVLKB4FNMSD3YNXP3MG4YD/","tags":["web"]},{"url":"https://ubuntu.com/security/notices/USN-8437-1","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2713","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44236","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-44235","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44235","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8724-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-35789","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-44236","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-59986","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-61547","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-44235","title":"rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T17:09:48.108Z","modified":"2026-09-17T17:43:19.821Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125","CWE-191"],"updated_at":"2026-11-02T13:42:49.132798Z"}],"euvd":[{"id":"EUVD-2026-82333","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T17:09:48Z","modified":"2026-09-17T17:43:19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T17:28:10.833571Z"}],"nvd":[{"id":"CVE-2026-44235","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T18:16:43.85Z","modified":"2026-09-30T17:43:24.057Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125","CWE-191"],"updated_at":"2026-11-02T14:12:49.70655Z"}],"osv":[{"id":"CVE-2026-44235","title":"rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T17:09:48.108Z","modified":"2026-10-28T11:01:07.36639794Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125","CWE-191"],"updated_at":"2026-11-02T15:45:04.820169Z"},{"id":"DEBIAN-CVE-2026-44235","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T18:16:43.85Z","modified":"2026-10-01T08:47:36.203345595Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"OESA-2026-2713","title":"librabbitmq security update","description":"This is a C-language AMQP client library for use with AMQP servers speaking protocol versions 0-9-1.\r\n\r\nSecurity Fix(es):\n\n(CVE-2026-44235)\n\n(CVE-2026-44236)","status":"published","published":"2026-06-24T11:11:38Z","modified":"2026-08-18T01:20:06.151630948Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.449097Z"},{"id":"UBUNTU-CVE-2026-44235","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-06-11T00:00:00Z","modified":"2026-09-24T02:00:18.977353701Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:22.075798Z"},{"id":"AZL-105084","title":"CVE-2026-44235 affecting package librabbitmq 0.14.0-1","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-17T18:16:43Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:17.719431Z"},{"id":"BIT-rabbitmq-c-2026-44235","title":"rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read","description":"rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state-\u003etarget_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.","status":"published","published":"2026-09-29T08:56:06.323Z","modified":"2026-09-29T10:10:38.537559237Z","updated_at":"2026-11-02T15:28:35.111822Z"},{"id":"MGASA-2026-0314","title":"Updated librabbitmq packages fix security vulnerabilities","description":"The updated packages fix security vulnerabilities:\nAn issue was discovered in the C AMQP client library (aka rabbitmq-c)\nthrough 0.13.0 for RabbitMQ. Credentials can only be entered on the\ncommand line (e.g., for amqp-publish or amqp-consume) and are thus\nvisible to local attackers by listing a process and its arguments.\n(CVE-2023-35789)\nsize_t underflow in AMQP frame length computation leads to out-of-bounds\nread in rabbitmq-c. (CVE-2026-44235)\nHeap buffer overflow in AMQP login handshake via undersized\nconnection.tune.frame_max. (CVE-2026-44236)\n","status":"published","published":"2026-08-03T18:47:23Z","modified":"2026-08-03T19:00:05.541827422Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"USN-8437-1","title":"librabbitmq vulnerabilities","description":"It was discovered that rabbitmq-c exposed credentials in command-line\narguments under certain circumstances. A local attacker could possibly use\nthis issue to obtain sensitive information. This issue only affected Ubuntu\n22.04 LTS and Ubuntu 24.04 LTS. (CVE-2023-35789)\n\nIt was discovered that rabbitmq-c incorrectly handled AMQP frame lengths\nunder certain circumstances, which could lead to an out-of-bounds read. A\nremote attacker could possibly use this issue to cause rabbitmq-c to crash,\nresulting in a denial of service. (CVE-2026-44235)\n\nIt was discovered that rabbitmq-c incorrectly handled AMQP login handshakes\nunder certain circumstances, which could lead to a heap buffer overflow. A\nremote attacker could possibly use this issue to cause rabbitmq-c to crash,\nresulting in a denial of service, or execute arbitrary code.\n(CVE-2026-44236)","status":"published","published":"2026-06-16T14:48:17Z","modified":"2026-09-21T10:00:34.081438884Z","updated_at":"2026-11-02T16:58:25.103481Z"},{"id":"USN-8724-1","title":"librabbitmq vulnerabilities","description":"It was discovered that the rabbitmq-c command-line tools only accepted\ncredentials on the command line, making them visible to other local users\nthrough the process list. An attacker could possibly use this to obtain\nsensitive credentials. This issue only affected Ubuntu 14.04 LTS, Ubuntu\n16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2023-35789)\n\nIt was discovered that rabbitmq-c did not correctly compute AMQP frame\nlengths, leading to a size_t underflow. A remote attacker could possibly\nuse this to cause rabbitmq-c to crash, resulting in a denial of service, or\npossibly expose sensitive information. This issue only affected Ubuntu\n14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.\n(CVE-2026-44235)\n\nIt was discovered that rabbitmq-c did not properly validate the frame size\nduring the AMQP login handshake. A remote attacker could possibly use this\nto cause a heap buffer overflow, resulting in a denial of service or\npossibly the execution of arbitrary code. This issue only affected Ubuntu\n14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.\n(CVE-2026-44236)\n\nIt was discovered that rabbitmq-c did not correctly validate the length of\ndecoded bytes fields, leading to an integer overflow in a bounds check on\n32-bit systems. A remote attacker controlling a broker, or able to\nintercept an unencrypted connection, could possibly use this to cause an\nout-of-bounds read, resulting in a denial of service or the exposure of\nsensitive information. (CVE-2026-59986)\n\nIt was discovered that rabbitmq-c did not validate the body fragment length\nwhen serialising an AMQP body frame with the amqp_send_frame() API. An\nattacker could possibly use this to cause a heap buffer overflow, resulting\nin a denial of service (application crash) or possibly the execution of\narbitrary code. This issue did not affect Ubuntu 14.04 LTS.\n(CVE-2026-61547)","status":"published","published":"2026-09-03T15:51:03Z","modified":"2026-09-21T10:00:32.721734371Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}