CVE catalog
CVE-2026-57220
RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and bef
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.55% · Oct 25, 2026
RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.
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 | not affected |
| Debian | rabbitmq-server | forky | 4.3.6-1 | not affected |
| Debian | rabbitmq-server | trixie | 4.0.5-6+deb13u2 | not affected |
| Debian | rabbitmq-server | bookworm | 3.10.8-1.1+deb12u1 | not affected |
| Debian | rabbitmq-server | bookworm-security | 3.10.8-1.1+deb12u1 | not affected |
| Cpe | rabbitmq_server | Not reported | 4.2.6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rabbitmq-server | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | rabbitmq-server | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | rabbitmq-server | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | rabbitmq-server | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Cpe | rabbitmq_server | cpe | Not reported | 4.2.6 | Not reported | NVD-CVE-2026-57220 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [rabbitmq-server]Not affected
Details (4)
3.10.8-1.1+deb12u1· all · bookwormNot affected
nvd · rabbitmq-server · debian · bookworm
3.10.8-1.1+deb12u1· all · bookwormNot affected
nvd · rabbitmq-server · debian · bookworm
3.10.8-1.1+deb12u1· all · bookworm-securityNot affected
nvd · rabbitmq-server · debian · bookworm
3.10.8-1.1+deb12u1· all · bookworm-securityNot affected
nvd · rabbitmq-server · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21903-1.json]
- [https://github.com/rabbitmq/rabbitmq-server/commit/595ec28fa1621b1f2c28124e4e0466a8ad963547]
- [https://github.com/rabbitmq/rabbitmq-server/commit/773a49c4921e8be990262a2d609c35916825679e]
- [https://github.com/rabbitmq/rabbitmq-server/pull/16171]
- [https://github.com/rabbitmq/rabbitmq-server/pull/16173]
- [https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6]
- [https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-f364-87q5-j35q]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-57220]
- [https://security-tracker.debian.org/tracker/CVE-2026-57220]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57220.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2079.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]