CVE-2026-57212: Rabbitmq server · RabbitMQ is a messaging and streaming broker
Affects rabbitmq-serverSource GCVE Database
Not known to be exploited · CVSS 7.1 High.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:LExploitation evidence
Disclosed: evidence found.
CVE published 10 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10rabbitmq-serverpkg:deb/ubuntu/rabbitmq-server?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSrabbitmq-serverpkg:deb/ubuntu/rabbitmq-server?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSrabbitmq-serverpkg:deb/ubuntu/rabbitmq-server?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSrabbitmq-serverpkg:deb/ubuntu/rabbitmq-server?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSrabbitmq-serverpkg:deb/ubuntu/rabbitmq-server@3.8.3-0ubuntu0.3?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSrabbitmq-serverpkg:deb/ubuntu/rabbitmq-server?arch=source&distro=esm-infra/focalOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade RabbitMQ to version 3.13.14, 4.0.19, 4.1.10, or 4.2.5 or later to apply the official fix for this vulnerability. No other mitigation is indicated by the vendor advisory.
Description
RabbitMQ versions prior to 3.13.14, 4.0.19, 4.1.10, and 4.2.5 contain a vulnerability in the rabbitmq_management HTTP API where oversized valid JSON bodies are accepted improperly. This occurs due to incomplete size checks in the read_complete_body function, potentially leading to denial of service. The issue has been fixed in the specified versions.
References
- ubuntu.com/security/CVE-2026-57212 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-57212 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/commit/3976d148901bdfa82e1cd60b7a4534e073266ba5 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/commit/b8fc2ef7c50a2797d15e1ea7cf34f290032303bb (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/pull/15712 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/pull/15714 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cmq-vp28-xqrj (opens in a new tab)