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Fencer Vulns
medium 6.1

CVE-2026-79650 json

Apache CXF: OIDC RP Open Redirect

published 2026-10-09 30 d ago modified 2026-10-20 19 d ago also EUVD-2026-95697

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Apache CXF’s OIDC relying-party component could redirect users to an attacker-controlled URL after successful authentication. The issue occurs because attacker-controlled state parameters are preserved and later used as redirect targets without validating that the final decoded URI belongs to the RP’s origin. Both directly encoded and double-encoded external URLs can trigger the issue, depending on which validation path is used. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

Patch / fix

  • Apache Software Foundation Apache CXF 3.6.13, 4.1.9, 4.2.4

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-2026-79650 updated cvss 6.1

org.apache.cxf/cxf-rt-rs-security-sso-oidc: Apache CXF: Open redirect via unvalidated state parameter

  • Red Hat build of Apache Camel for Spring Boot 4 cxf-rt-rs-security-sso-oidc 4.1.8.rhbac-redhat-00002
    affected: no fix available “Fix deferred”
  • Red Hat Fuse 7 cxf-rt-rs-security-sso-oidc 4.1.8.rhbac-redhat-00002 Red Hat JBoss Web Server 5 cxf-rt-rs-security-sso-oidc 4.1.8.rhbac-redhat-00002
    affected: no fix planned “Out of support scope”

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
no
Technical impact
partial
Assessed
24 d ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Apache Software Foundation Apache CXF

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

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.