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CVE-2026-100227— Apache CXF: XML Signature wrapping in JAX-RS XML Security

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 JAX-RS XML 安全模块中存在密码学签名验证不当的漏洞。JAX-RS XML 签名拦截器（包括 XmlSigInHandler、XmlSigInInterceptor 和流式 XmlSecInInterceptor）未能确保传递给应用程序的 XML 内容确实受到签名的保护。攻击者可以将任何由受信任密钥签名的文档包装在未签名的内容中，从而导致应用程序错误地将其视为已签名。 建议用户升级至修复了该问题的版本：4.2.4、4.1.9 或 3.6.13。

AI Predicted 7.5 Difficulty: Moderate

Affected Version Matrix 3

VendorProduct Version RangeStatus
Apache Software Foundation Apache CXF 4.2.0< 4.2.4 affected
4.0.0< 4.1.9 affected
< 3.6.13 affected
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I. Basic Information for CVE-2026-100227

Vulnerability Information
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Vulnerability Title
Apache CXF: XML Signature wrapping in JAX-RS XML Security
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Verification of Cryptographic Signature vulnerability in Apache CXF's JAX-RS XML Security module. The JAX-RS XML Signature interceptors (XmlSigInHandler, XmlSigInInterceptor and the streaming XmlSecInInterceptor) did not ensure that the XML passed to the application was covered by the signature. An attacker with any document signed by a trusted key could wrap it in unsigned content, which the application would then treat as signed. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache CXF 4.2.0 ~ 4.2.4 -

II. Public POCs for CVE-2026-100227

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III. Intelligence Information for CVE-2026-100227

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Mailing List Discussions for CVE-2026-100227 (1)

Same Patch Batch · Apache Software Foundation · 2026-10-09 · 13 CVEs total

CVE-2026-103413 8.8 HIGH Apache Camel Karavan: unvalidated Kubernetes resources applied from a project's kubernetes
CVE-2026-103412 8.8 HIGH Apache Camel Karavan: project file name path traversal when committing a project to Git
CVE-2026-108039 Apache CXF: Prevent unbounded XML document size in StaxUtils by adding default element and
CVE-2026-107938 Apache CXF: The Netty HTTP client transport does not perform TLS hostname verification.
CVE-2026-107937 Apache CXF: The attachment header size and count limits can be bypassed, which allows deni
CVE-2026-97791 Apache CXF: STSTokenValidator can accept untrusted SAML assertions because it shares valid
CVE-2026-97468 Apache CXF: Authentication bypass via weak cache keys for validated STS tokens
CVE-2026-86463 Apache CXF: FIQL Query Parser Denial of Service
CVE-2026-79650 Apache CXF: OIDC RP Open Redirect
CVE-2026-78384 Apache CXF: Unbounded DEFLATE Decompression in CXF JOSE/JWE and SAML Processing (Decompres
CVE-2026-73179 Apache CXF: JPA authorization-code consume is non-atomic
CVE-2026-71575 Apache CXF: Inoperative max_age authentication-freshness check in OidcClientCodeRequestFil

IV. Related Vulnerabilities

Same product: Apache CXF
Same vendor: Apache Software Foundation

V. Comments for CVE-2026-100227

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