CVE-2026-50628

Apache CXF: OAuth2: Inverted IP Binding Check Defeats Security Control

State: Published
Severity: 9.8 Critical
Published: Jun 12, 2026
Updated: Aug 10, 2026
Reserved: Jun 5, 2026

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 or 3.6.12, which fixes this issue.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
3.1	7.4 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	redhat-SADP

Weaknesses

CWE-20 Improper Input Validation
CWE-358 Improperly Implemented Security Check for Standard

Affected Products

Product	Versions
Apache CXFApache Software Foundation	4.2.0 to before 4.2.2Affected 4.0.0 to before 4.1.7Affected before 3.6.12Affected

References

https://lists.apache.org/thread/vb3ho8lf228gh90m1fpnohf2008xrdxkvendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/11/5
https://access.redhat.com/security/cve/CVE-2026-50628vdb-entry
RHBZ#2488302issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50628.json
https://access.redhat.com/errata/RHSA-2026:37390vendor-advisory

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