CVE-2026-50628

Modified Modified - Updated After Analysis

OAuthRequestFilter Logic Error Allows Unauthorized Access

Publication date: 2026-06-12

Last updated on: 2026-07-02

Assigner: Apache Software Foundation

Description

A logic error in OAuthRequestFilter rejects legitimate requests originating from the bound IP address, while blindly allowing requests from any other IP address. Enabling this security feature inadvertently creates an inverse security check. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-12

Last Modified

2026-07-02

Generated

2026-07-02

AI Q&A

2026-06-12

EPSS Evaluated

2026-07-01

NVD

CVE-2026-50628

EUVD

EUVD-2026-36396

Affected Vendors & Products

Vendor	Product	Version / Range
apache	cxf	to 4.1.7 (exc)
apache	cxf	From 4.2.0 (inc) to 4.2.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-358	The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.

Attack-Flow Graph

Executive Summary

This vulnerability is a logic error in Apache CXF's OAuthRequestFilter component. It causes legitimate requests originating from the bound IP address to be rejected, while requests from any other IP address are allowed. This behavior inverts the intended security check, effectively allowing unauthorized access by bypassing the IP binding security control.

Impact Analysis

The vulnerability can impact you by allowing unauthorized access to your system. Because the security check is inverted, attackers from any IP address other than the bound one can bypass IP binding restrictions, potentially gaining access to protected resources or services.

Mitigation Strategies

To mitigate this vulnerability, users are advised to upgrade Apache CXF to versions 4.2.2 or 4.1.7, which contain the fix for the logic error in OAuthRequestFilter.

Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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