Skip to content
Fencer Vulns
critical 9.8

CVE-2026-50628 in the critical feed json

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

published 2026-06-12 4 mo ago modified 2026-11-05 3 d ago also GHSA-g5v7-jchf-7jrr , EUVD-2026-36396

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.cxf:cxf-rt-rs-security-oauth2 4.1.7, 4.2.2
  • Apache Software Foundation Apache CXF 3.6.12, 4.1.7, 4.2.2
  • Red Hat Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 oauth2-saml, security-oauth2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-50628 updated cvss 7.4

cxf: org.apache.cxf/cxf-rt-rs-security-oauth2: cxf: Unauthorized access due to logic error in OAuthRequestFilter

  • Red Hat Fuse 7 cxf-rt-rs-security-oauth2, cxf-rt-rs-security-oauth2-saml Red Hat JBoss Web Server 5 cxf-rt-rs-security-oauth2, cxf-rt-rs-security-oauth2-saml
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16
    fixed: vendor fix RHSA-2026:37390
  • Red Hat JBoss Enterprise Application Platform Expansion Pack cxf-rt-rs-security-oauth2, cxf-rt-rs-security-oauth2-saml
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 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 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.cxf:cxf-rt-rs-security-oauth2
>=4.2.0, <4.2.2
<4.1.7
4.2.2
4.1.7

Affected products

  • Apache Software Foundation Apache CXF
  • Red Hat Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16
  • Red Hat Red Hat Fuse 7
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat JBoss Web Server 5

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-358 Improperly Implemented Security Check for Standard
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.