CVE-2026-50627— Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator
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是美国Apache基金会开源的一个Web服务开发框架。 Apache CXF存在授权问题漏洞，该漏洞源于JwtAccessTokenValidator类未能验证传入JWT访问令牌的“aud”（Audience）声明，可能导致针对一个资源服务器签发的JWT被成功重放到完全不同的另一个资源服务器，造成令牌混淆/路由攻击。
Possible ATT&CK Techniques 1 AI
T1528 · Steal Application Access TokenAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache CXF | 4.2.0< 4.2.2 |
affected |
4.0.0< 4.1.7 |
affected | ||
< 3.6.12 |
affected |
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I. Basic Information for CVE-2026-50627
Vulnerability Information
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Vulnerability Title
Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator
Source: CVE Program / CVE List V5
Vulnerability Description
The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选名称进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Apache CXF 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache cxf是美国Apache基金会开源的一个Web服务开发框架。 Apache CXF存在授权问题漏洞，该漏洞源于JwtAccessTokenValidator类未能验证传入JWT访问令牌的“aud”（Audience）声明，可能导致针对一个资源服务器签发的JWT被成功重放到完全不同的另一个资源服务器，造成令牌混淆/路由攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache CXF | 4.2.0 ~ 4.2.2 | - |
|
II. Public POCs for CVE-2026-50627
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2026-50627 (1)
Same Patch Batch · Apache Software Foundation · 2026-06-12 · 11 CVEs total
| CVE-2026-50645 | Apache CXF: No restriction on attachment headers per message | |
| CVE-2026-50634 | Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature ent | |
| CVE-2026-50633 | Apache CXF: JNDI Injection vulnerability in DispatchMDBMessageListenerImpl | |
| CVE-2026-50632 | Apache CXF: JNDI Injection Vulnerability in JMSConfigFactory | |
| CVE-2026-50631 | Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing | |
| CVE-2026-50630 | Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection | |
| CVE-2026-50629 | Apache CXF: OAuth2: Log Injection via Unsanitized Client Identifier | |
| CVE-2026-50628 | Apache CXF: OAuth2: Inverted IP Binding Check Defeats Security Control | |
| CVE-2026-49875 | Apache CXF: XML External Entity (XXE) Injection in W3CMultiSchemaFactory and EndpointRefer | |
| CVE-2026-50623 | Apache CXF: Authentication Bypass in OAuth2 TokenIntrospectionService |
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V. Comments for CVE-2026-50627
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