CVE catalog
CVE-2026-44236
rabbitmq-c vulnerabilities
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized connection.tune.frame_max value during amqp_login(), and rabbitmq-c accepts the value in amqp_login_inner() in librabbitmq/amqp_socket.c. amqp_tune_connection() in librabbitmq/amqp_connection.c uses frame_max to reallocate the outbound buffer without enforcing AMQP_FRAME_MIN_SIZE. Immediate serialization of connection.tune-ok through amqp_frame_to_bytes() writes beyond the undersized heap allocation, causing memory corruption and likely denial of service. An on-path attacker can also trigger the flaw against plaintext AMQP traffic. Code execution is theoretically possible but was not demonstrated. This issue is fixed in version 0.16.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | librabbitmq | sid | 0.18.1-1 | fixed |
| Debian | librabbitmq | forky | 0.18.1-1 | fixed |
| Debian | librabbitmq | trixie | 0.15.0-1+deb13u2 | fixed |
| Debian | librabbitmq | trixie-security | 0.15.0-1+deb13u2 | fixed |
| Debian | librabbitmq | bookworm | 0.11.0-1+deb12u2 | fixed |
| Debian | librabbitmq | bookworm-security | 0.11.0-1+deb12u3 | fixed |
| Ubuntu | librabbitmq | noble | 0.11.0-1ubuntu0.1 | fixed |
| Ubuntu | amqp-tools | noble | 0.11.0-1ubuntu0.1 | fixed |
| Ubuntu | librabbitmq-dev | noble | 0.11.0-1ubuntu0.1 | fixed |
| Ubuntu | librabbitmq4 | noble | 0.11.0-1ubuntu0.1 | fixed |
| Ubuntu | librabbitmq | noble | 0.11.0-1+deb12u2 | fixed |
| Ubuntu | librabbitmq | noble | 0.11.0-1ubuntu0.2 | fixed |
| Ubuntu | amqp-tools | noble | 0.11.0-1ubuntu0.2 | fixed |
| Ubuntu | librabbitmq-dev | noble | 0.11.0-1ubuntu0.2 | fixed |
| Ubuntu | librabbitmq4 | noble | 0.11.0-1ubuntu0.2 | fixed |
| Ubuntu | librabbitmq | pro | 0.9.0-0.2 | vulnerable |
| Ubuntu | librabbitmq | pro | 0.9.0-0.2ubuntu1 | vulnerable |
| Ubuntu | librabbitmq | pro | 0.10.0-1 | vulnerable |
| Ubuntu | librabbitmq | pro | 0.10.0-1ubuntu0.20.04.1~esm1 | fixed |
| Ubuntu | librabbitmq | 22.04 | 0.10.0-1 | vulnerable |
| Ubuntu | librabbitmq | 22.04 | 0.10.0-1build1 | vulnerable |
| Ubuntu | librabbitmq | 22.04 | 0.10.0-1ubuntu1 | vulnerable |
| Ubuntu | librabbitmq | 22.04 | 0.10.0-1ubuntu2 | vulnerable |
| Ubuntu | librabbitmq | 22.04 | 0.10.0-1ubuntu2.1 | fixed |
| Ubuntu | librabbitmq | 24.04 | 0.11.0-1 | vulnerable |
| Ubuntu | librabbitmq | 24.04 | 0.11.0-1build1 | vulnerable |
| Ubuntu | librabbitmq | 24.04 | 0.11.0-1build2 | vulnerable |
| Ubuntu | librabbitmq | 24.04 | 0.11.0-1ubuntu0.1 | fixed |
| Ubuntu | librabbitmq | 25.10 | 0.15.0-1 | vulnerable |
| Ubuntu | librabbitmq | 25.10 | 0.15.0-1build1 | vulnerable |
| Ubuntu | librabbitmq | 25.10 | 0.15.0-1ubuntu0.25.10.1 | fixed |
| Ubuntu | librabbitmq | 26.04 | 0.15.0-1build1 | vulnerable |
| Ubuntu | librabbitmq | 26.04 | 0.15.0-1build2 | vulnerable |
| Ubuntu | librabbitmq | 26.04 | 0.15.0-1ubuntu0.26.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | librabbitmq | source | sid | 0.16.0-1 | not yet assigned | Not reported | Not reported |
| Debian | librabbitmq | source | forky | 0.16.0-1 | not yet assigned | Not reported | Not reported |
| Debian | librabbitmq | source | trixie | 0.15.0-1+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | librabbitmq | source | bookworm | 0.11.0-1+deb12u2 | not yet assigned | Not reported | Not reported |
| Ubuntu | librabbitmq | deb | noble | 0.11.0-1ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | amqp-tools | deb | noble | 0.11.0-1ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq-dev | deb | noble | 0.11.0-1ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq4 | deb | noble | 0.11.0-1ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq | deb | noble | 0.11.0-1+deb12u2 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq | deb | noble | 0.11.0-1ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | amqp-tools | deb | noble | 0.11.0-1ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq-dev | deb | noble | 0.11.0-1ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq4 | deb | noble | 0.11.0-1ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | librabbitmq | deb | pro | 0.10.0-1ubuntu0.20.04.1~esm1 | Not reported | UBUNTU-CVE-2026-44236 | Not reported |
| Ubuntu | librabbitmq | deb | 22.04 | 0.10.0-1ubuntu2.1 | Not reported | UBUNTU-CVE-2026-44236 | Not reported |
| Ubuntu | librabbitmq | deb | 24.04 | 0.11.0-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-44236 | Not reported |
| Ubuntu | librabbitmq | deb | 25.10 | 0.15.0-1ubuntu0.25.10.1 | Not reported | UBUNTU-CVE-2026-44236 | Not reported |
| Ubuntu | librabbitmq | deb | 26.04 | 0.15.0-1ubuntu0.26.04.1 | Not reported | UBUNTU-CVE-2026-44236 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [amqp-tools]Fixed
Source package: [librabbitmq]
Details (4)
0.11.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
- [librabbitmq4]Fixed
Source package: [librabbitmq]
Details (4)
0.11.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
- [librabbitmq-dev]Fixed
Source package: [librabbitmq]
Details (4)
0.11.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
0.11.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
0.11.0-1+deb12u2usn · librabbitmq · debian · bookworm; usn · librabbitmq · debian · 12
[Debian 13 (Trixie)]
- [amqp-tools]Fixed
Source package: [librabbitmq]
Details (5)
0.15.0-1+deb13u1· amd64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· arm64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· amd64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· arm64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
- [librabbitmq4]Fixed
Source package: [librabbitmq]
Details (5)
0.15.0-1+deb13u1· amd64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· arm64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· amd64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· arm64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
- [librabbitmq-dev]Fixed
Source package: [librabbitmq]
Details (5)
0.15.0-1+deb13u1· amd64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· arm64 · trixieFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· amd64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
0.15.0-1+deb13u2· arm64 · trixie-securityFixed · Fixed:
0.15.0-1+deb13u1usn · librabbitmq · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2026_75582.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-44236]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-44236]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-44236]
- [https://security-tracker.debian.org/tracker/CVE-2026-44236]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44236.json]
- [https://ubuntu.com/security/notices/USN-8437-1]
- [https://ubuntu.com/security/notices/USN-8724-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3736.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]