CVE-2026-66909— Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
Quick assessment
Affected
Apache Software Foundation Apache CXF
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache CXF 的 JMS 传输组件会对任何传入的 JMS ObjectMessage 的消息体使用原生 Java 反序列化机制进行处理，且未实施任何类型限制。任何能够向服务的 JMS 目的地发送消息的攻击者，均可提交一个恶意的序列化对象，从而导致拒绝服务（DoS）；如果类路径中存在合适的利用链类（gadget class），还可能引发远程代码执行（RCE）。该漏洞的修复方案默认禁用了 ObjectMessage 的反序列化功能，并提供配置开关以便在必要时重新启用。建议用户升级至已修复此问题的版本，包括 4.
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache CXF | 4.2.0< 4.2.3 |
affected |
4.0.0< 4.1.8 |
affected | ||
< 3.6.12 |
affected |
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I. Basic Information for CVE-2026-66909
Vulnerability Information
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Vulnerability Title
Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
Source: CVE Program / CVE List V5
Vulnerability Description
Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache CXF | 4.2.0 ~ 4.2.3 | - |
|
II. Public POCs for CVE-2026-66909
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2026-66909 (1)
Same Patch Batch · Apache Software Foundation · 2026-08-06 · 18 CVEs total
| CVE-2026-64640 | 5.3 MEDIUM | Apache Polaris: register endpoint reads attacker-controlled storage location before allowe |
| CVE-2026-65583 | Apache CXF: Self-issued ID token claims validation skipped | |
| CVE-2025-49506 | Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack | |
| CVE-2026-32327 | Apache Portable Runtime Utility: apr-util XML stack recursion crash | |
| CVE-2026-34191 | Apache Portable Runtime Utility: SQL Injection in apr_dbd_oracle | |
| CVE-2026-34501 | Apache Portable Runtime Utility: Heap buffer overflow in APR redis client | |
| CVE-2026-34502 | Apache Portable Runtime Utility: Heap buffer overflow in APR memcached client | |
| CVE-2026-57818 | Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider | |
| CVE-2026-61466 | Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation | |
| CVE-2026-63687 | Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters | |
| CVE-2026-68079 | Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replay | |
| CVE-2026-68481 | Apache CXF: Revocation bypass in DefaultEncryptingOAuthDataProvider | |
| CVE-2026-65432 | Apache CXF: XXE via WSDL/XSD import parsing | |
| CVE-2026-57817 | Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow | |
| CVE-2026-64958 | Apache CXF: Denial of service via message header attachments | |
| CVE-2026-57819 | Apache CXF: No default restriction on the amount of form parameters per message | |
| CVE-2026-54225 | Apache CXF: Denial of Service attack via large attachments |
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