Skip to content
OpenAdvisories
Medium · 6.1 CVE-2026-73191 EUVD-2026-77477GHSA-f668-p5f8-gcxm

Apache Syncope: CAS service URL injection via Forwarded HTTP headers

Published Sep 14, 2026 · Updated Sep 14, 2026 · Assigned by apache

Description

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Apache Syncope.

When the Syncope SRA is configured for CAS authentication, the target Apereo CAS instance's URL is calculated by unconditionally looking at client-supplied forwarded HTTP headers.

This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache Syncope 3.0.0-M0 – ≤ 3.0.16, 4.0.0-M0 – ≤ 4.0.7, 4.1.0-M0 – ≤ 4.1.2 —

References