CVE-2026-50628 Apache CXF: OAuth2: Inverted IP Binding Check Defeats Security Control
A logic error in Apache CXF's OAuth2 IP binding check allows attackers to bypass security controls by sending requests from unauthorized IP addresses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-50628?
CVE-2026-50628 is a critical vulnerability in Apache Cxf, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-50628?
4 open source packages ship an affected version, including org.apache.cxf:cxf-rt-rs-security-oauth2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.cxf:cxf-rt-rs-security-oauth2 Maven | All versions | 4.1.7 |
org.apache.cxf:cxf-rt-rs-security-oauth2 Maven | All versions | 4.1.7 |
org.apache.cxf:cxf-rt-rs-security-oauth2 Maven | From 4.2.0 | 4.2.2 |
org.apache.cxf:cxf-rt-rs-security-oauth2 Maven | From 4.2.0 | 4.2.2 |
Products include Apache Cxf.
How do I fix CVE-2026-50628?
Upgrade org.apache.cxf:cxf-rt-rs-security-oauth2 to a fixed version for your release line: 4.1.7 or 4.2.2.
Is CVE-2026-50628 being exploited?
There is no known exploitation of CVE-2026-50628 in the wild and no public exploit code.
Other vulnerabilities in Apache Cxf
- CVE-2012-2379 XML Signature/Encryption Not Validated in Apache CXF
- CVE-2026-66909 Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
- CVE-2026-68079 Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replay
- CVE-2025-48913 Apache CXF: Untrusted JMS configuration can lead to RCE
- CVE-2022-46364 Apache CXF SSRF Vulnerability
Sources
Also known as GHSA-g5v7-jchf-7jrr.