Vulnerability in com.rabbitmq:amqp-client (CVE-2026-63336)
Summary
Vulnerability in com.rabbitmq:amqp-client (CVE-2026-63336). Risk of unauthorized operations or information disclosure. Exploitable via TrustEverythingTrustManager. Mitigation: upgrade to 5.33.0 or later.
Original description
The description as published by the source.
Vulnerability Summary
com.rabbitmq.client.TrustEverythingTrustManager accepts ANY TLS certificate (including null chains) and is used as the default trust manager when calling ConnectionFactory.useSslProtocol() without arguments. Combined with hostname verification being disabled by default, this enables trivial man-in-the-middle attacks.
Affected Components
com.rabbitmq.client.TrustEverythingTrustManager— accepts any certificatecom.rabbitmq.client.ConnectionFactory.useSslProtocol()— uses TrustEverythingTrustManager- Hostname verification disabled by default (
enableHostnameVerification()must be called explicitly) com.rabbitmq.client.ConnectionFactory.getPassword()— returns plaintext with no redaction- Default port 5672 (plaintext) with PLAIN SASL — credentials sent unencrypted
POC (Verified on Java 21, amqp-client 5.25.0)
// TrustEverythingTrustManager accepts ANY certificate including null
TrustEverythingTrustManager tm = new TrustEverythingTrustManager();
tm.checkServerTrusted(null, "RSA"); // No exception — accepts null cert chain
tm.getAcceptedIssuers(); // Returns empty array — trusts all CAs
// ConnectionFactory defaults
ConnectionFactory factory = new ConnectionFactory();
factory.useSslProtocol(); // Uses TrustEverythingTrustManager internally
// enableHostnameVerification() NOT called by default
// Credential exposure
factory.setPassword("secret_password_123");
factory.getPassword(); // Returns "secret_password_123"…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-63336 has been found in com.rabbitmq:amqp-client.
Attackers can target a specific entry point like TrustEverythingTrustManager over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade com.rabbitmq:amqp-client to 5.33.0 or later.
If unsure, ask your IT team or search "com.rabbitmq:amqp-client CVE-2026-63336" on the vendor's site.
CVE-2026-63336 (com.rabbitmq:amqp-client) — CWE-295
Attack surface: TrustEverythingTrustManager
Patched: 5.33.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-295) exists in com.rabbitmq:amqp-client. Attackers reach the vulnerable code path via TrustEverythingTrustManager.
Check the vendor advisory for the affected versions of com.rabbitmq:amqp-client. Attack surface: TrustEverythingTrustManager.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 5.33.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで com.rabbitmq:amqp-client を使っているサービスとバージョンを洗い出す。
-
2Apply patch patch
Upgrade com.rabbitmq:amqp-client to 5.33.0ステージング環境で 5.33.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-63336 rabbitmq-java-client
- Ubuntu UBUNTU-CVE-2026-63336 rabbitmq-java-client