CVE catalog
CVE-2026-63336
rabbitmq-java-client: CVE-2026-63336
- Severity
- Medium · CVSS 5.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.31% · Oct 25, 2026
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.0, com.rabbitmq.client.ConnectionFactory.useSslProtocol() and ConnectionFactory.useSslProtocol(String) configure com.rabbitmq.client.TrustEverythingTrustManager and leave hostname verification disabled, causing arbitrary server certificates, including self-signed certificates, to be accepted. A network attacker able to intercept a TLS connection can impersonate the RabbitMQ broker, read protected AMQP traffic, and modify traffic without certificate or hostname validation. The fix changes the production TLS helpers to use the JVM default trust store and enables hostname verification, while retaining an explicitly named development-only no-verification helper. This issue is fixed in version 5.33.0.
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 | rabbitmq-java-client | sid | 5.0.0-2 | vulnerable |
| Debian | rabbitmq-java-client | trixie | 5.0.0-1.1 | vulnerable |
| Debian | rabbitmq-java-client | bookworm | 5.0.0-1.1 | vulnerable |
| Maven | com.rabbitmq:amqp-client | Not reported | 5.33.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rabbitmq-java-client | source | sid | (unfixed) | not yet assigned | Not reported | [1144958] |
| Debian | rabbitmq-java-client | source | trixie | (unfixed) | not yet assigned | Not reported | [1144958] |
| Debian | rabbitmq-java-client | source | bookworm | (unfixed) | not yet assigned | Not reported | [1144958] |
| Maven | com.rabbitmq:amqp-client | maven | Not reported | 5.33.0 | Not reported | GHSA-5M9F-RPHJ-C435 | Not reported |
Notes
[trixie] rabbitmq-java-client: Minor issue [bookworm] rabbitmq-java-client: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [librabbitmq-client-java]Affected
Source package: [rabbitmq-java-client]
Details (2)
5.0.0-1.1· all · bookwormAffected
dsa · rabbitmq-java-client · debian · bookworm; dsa · rabbitmq-java-client · debian · 12
5.0.0-1.1· all · bookwormAffected
dsa · rabbitmq-java-client · debian · bookworm; dsa · rabbitmq-java-client · debian · 12
[Debian 13 (Trixie)]
- [librabbitmq-client-java]Affected
Source package: [rabbitmq-java-client]
Details (2)
5.0.0-1.1· all · trixieAffected
dsa · rabbitmq-java-client · debian · 13
5.0.0-1.1· all · trixieAffected
dsa · rabbitmq-java-client · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-5m9f-rphj-c435]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-63336]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-63336]
- [https://security-tracker.debian.org/tracker/CVE-2026-63336]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2921.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]