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RHEL 8 : librabbitmq (RHSA-2026:75582)

🗓️ 05 Oct 2026 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 4 Views

Heap buffer overflow in librabbitmq rabbitmq-c leading to denial of service.

Related
Refs
Code
ReporterTitlePublishedViews
Family
anthropic
Anthropic		ANT-2026-D7FC4YDQ · rabbitmq-c · Heap-buffer-overflow
21 Jul 202605:21
–anthropic
bdu_fstec
BDU FSTEC		The vulnerability of the amqp_login_inner() function in the RabbitMQ message broker library, librabbitmq/amqp_socket.c, allows a attacker to cause a service failure.
18 Sep 202600:00
–bdu_fstec
circl
Circl		CVE-2026-44236
21 Sep 202615:00
–circl
cve
CVE		CVE-2026-44236
17 Sep 202617:04
–cve
cvelist
Cvelist		CVE-2026-44236 rabbitmq-c: Heap buffer overflow in AMQP login handshake via undersized connection.tune.frame_max
17 Sep 202617:04
–cvelist
debian
Debian		[SECURITY] [DLA 4658-1] librabbitmq security update
30 Jun 202623:20
–debian
debian
Debian		[SECURITY] [DSA 6343-1] librabbitmq security update
12 Jun 202618:50
–debian
debiancve
Debian CVE		CVE-2026-44236
17 Sep 202617:04
–debiancve
nessus
Tenable Nessus		Debian dla-4658 : amqp-tools - security update
30 Jun 202600:00
–nessus
nessus
Tenable Nessus		Debian dsa-6343 : amqp-tools - security update
12 Jun 202600:00
–nessus
Rows per page
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# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
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##

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    The librabbitmq packages provide an Advanced Message Queuing Protocol (AMQP) client library that allows
    you to communicate with AMQP servers using protocol version 0-9-1.

    Security Fix(es):

    * rabbitmq-c: rabbitmq-c: Heap buffer overflow leading to denial of service (CVE-2026-44236)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
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      'content/dist/rhel8/8.8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.8/s390x/codeready-builder/os',
      'content/dist/rhel8/8.8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/os',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.9/s390x/codeready-builder/os',
      'content/dist/rhel8/8.9/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8/aarch64/codeready-builder/os',
      'content/dist/rhel8/8/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8/s390x/codeready-builder/os',
      'content/dist/rhel8/8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8/x86_64/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi8/8/aarch64/codeready-builder/debug',
      'content/public/ubi/dist/ubi8/8/aarch64/codeready-builder/os',
      'content/public/ubi/dist/ubi8/8/aarch64/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi8/8/ppc64le/codeready-builder/debug',
      'content/public/ubi/dist/ubi8/8/ppc64le/codeready-builder/os',
      'content/public/ubi/dist/ubi8/8/ppc64le/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi8/8/s390x/codeready-builder/debug',
      'content/public/ubi/dist/ubi8/8/s390x/codeready-builder/os',
      'content/public/ubi/dist/ubi8/8/s390x/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi8/8/x86_64/codeready-builder/debug',
      'content/public/ubi/dist/ubi8/8/x86_64/codeready-builder/os',
      'content/public/ubi/dist/ubi8/8/x86_64/codeready-builder/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'librabbitmq-devel-0.9.0-6.el8_10', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var repo_relative_urls;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(rpm:exists_check))) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'librabbitmq / librabbitmq-devel / librabbitmq-tools');
}

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05 Oct 2026 00:00Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.17.1
EPSS0.00482
SSVC
librabbitmqrabbitmq-cHeap buffer overflowdenial of serviceAMQP
4