CVE-2026-79650Apache Cxf Open Redirect
NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Vulnerability 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.
CVSS v3.1 Base Metrics — Score 6.1 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NAttack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone
Affected & Patched Versions
- Apache Cxf < 3.6.13
- Apache Cxf >= 4.0.0 and < 4.1.9
- Apache Cxf >= 4.2.0 and < 4.2.4
- Apache Cxf 3.6.13
- Apache Cxf 4.1.9
- Apache Cxf 4.2.4
What to do
Fix it during your normal patch cycle. No exploitation is confirmed yet.
- Check whether you run Apache Cxf and which version.
- Update to a patched version listed above, then confirm the new version.
Timeline
- Oct 9, 2026Published
- Oct 20, 2026Record last modified
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
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External References
Data last checked: Nov 13, 2026 21:28 UTC