CVE-2026-50628: Apache CXF OAuth2 has Inverted IP Binding Check that Defeats Security Control
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.
Published Jun 12, 2026 · Updated Aug 20, 2026
Affected packages
org.apache.cxf:cxf-rt-rs-security-oauth2
- Ecosystem
- Maven
- Affected
- >= 4.2.0, < 4.2.2
- Fixed in
- 4.2.2
- Check
mvn dependency:tree -Dincludes=org.apache.cxf:cxf-rt-rs-security-oauth2
org.apache.cxf:cxf-rt-rs-security-oauth2
- Ecosystem
- Maven
- Affected
- < 4.1.7
- Fixed in
- 4.1.7
- Check
mvn dependency:tree -Dincludes=org.apache.cxf:cxf-rt-rs-security-oauth2
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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.
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-50628
- https://lists.apache.org/thread/vb3ho8lf228gh90m1fpnohf2008xrdxk
- https://access.redhat.com/security/cve/CVE-2026-50628
- https://bugzilla.redhat.com/show_bug.cgi?id=2488302
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50628.json
- https://access.redhat.com/errata/RHSA-2026:37390
- https://github.com/advisories/GHSA-g5v7-jchf-7jrr
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology