CVE catalog
CVE-2026-66072
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, get_chunk_selector/1 calls binary_to_atom on the raw client-supplied <<"chunk_selector">> pro
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.47% · Oct 27, 2026
RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, get_chunk_selector/1 calls binary_to_atom on the raw client-supplied <<"chunk_selector">> property from post-auth subscribe and resolve_offset_spec frames, with no whitelist and no existing guard. An authenticated stream client with read access to any stream can crash the broker node. Preconditions include rabbitmq_stream plugin enabled Authenticated stream-protocol user with read access to at least one stream. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.
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 | rabbitmq-server | sid | 4.3.6-1 | fixed |
| Debian | rabbitmq-server | forky | 4.3.6-1 | fixed |
| Debian | rabbitmq-server | trixie | 4.0.5-6+deb13u2 | vulnerable |
| Debian | rabbitmq-server | bookworm | 3.10.8-1.1+deb12u1 | vulnerable |
| Debian | rabbitmq-server | bookworm-security | 3.10.8-1.1+deb12u1 | vulnerable |
| Cpe | rabbitmq_server | Not reported | 4.3.1 | fixed |
| Ubuntu | rabbitmq-server | pro | 3.7.8-4ubuntu2 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.7.18-1 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1.1 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1.2 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1.3 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1.4 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.2-0ubuntu1.5 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.3-0ubuntu0.1 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.3-0ubuntu0.2 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.3-0ubuntu0.3 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.3-0ubuntu0.3+esm1 | vulnerable |
| Ubuntu | rabbitmq-server | pro | 3.8.3-0ubuntu0.3+esm2 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.8.9-3ubuntu1 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.8-1 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.8-2 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.8-3 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.8-5 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.8-6 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.13-1 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.13-1ubuntu0.22.04.1 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.13-1ubuntu0.22.04.2 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.27-0ubuntu0.1 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.27-0ubuntu0.2 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.27-0ubuntu0.5 | vulnerable |
| Ubuntu | rabbitmq-server | 22.04 | 3.9.27-0ubuntu0.6 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1ubuntu1 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1ubuntu1.2 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1ubuntu1.4 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1ubuntu1.6 | vulnerable |
| Ubuntu | rabbitmq-server | 24.04 | 3.12.1-1ubuntu1.7 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-8ubuntu2 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu1 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu2 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu3 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu4 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu5 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu5.1 | vulnerable |
| Ubuntu | rabbitmq-server | 26.04 | 4.0.5-10ubuntu5.2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rabbitmq-server | source | sid | 4.3.2-1 | not yet assigned | Not reported | Not reported |
| Debian | rabbitmq-server | source | forky | 4.3.2-1 | not yet assigned | Not reported | Not reported |
| Debian | rabbitmq-server | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | rabbitmq-server | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | rabbitmq_server | cpe | Not reported | 4.3.1 | Not reported | NVD-CVE-2026-66072 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [rabbitmq-server]Affected
Details (4)
3.10.8-1.1+deb12u1· all · bookwormAffected
nvd · rabbitmq-server · debian · bookworm; nvd · rabbitmq-server · debian · 12
3.10.8-1.1+deb12u1· all · bookwormAffected
nvd · rabbitmq-server · debian · bookworm; nvd · rabbitmq-server · debian · 12
3.10.8-1.1+deb12u1· all · bookworm-securityAffected
nvd · rabbitmq-server · debian · bookworm; nvd · rabbitmq-server · debian · 12
3.10.8-1.1+deb12u1· all · bookworm-securityAffected
nvd · rabbitmq-server · debian · bookworm; nvd · rabbitmq-server · debian · 12
[Debian 13 (Trixie)]
- [rabbitmq-server]Affected
Details (2)
4.0.5-6+deb13u2· all · trixieAffected
nvd · rabbitmq-server · debian · 13
4.0.5-6+deb13u2· all · trixieAffected
nvd · rabbitmq-server · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-66072]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-66072]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-66072]
- [https://security-tracker.debian.org/tracker/CVE-2026-66072]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-66072.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2268.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]