6.1

CVE-2026-73191

Apache Syncope: CAS service URL injection via Forwarded HTTP headers

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerApache Software Foundation
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Produkt Apache Syncope
Default Statusunaffected
Version <= 3.0.16
Version 3.0.0-M0
Status affected
Version <= 4.0.7
Version 4.0.0-M0
Status affected
Version <= 4.1.2
Version 4.1.0-M0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.214
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

https://lists.apache.org/thread/vx9bons1znhdkdpsxwjpy6qqqjc8xqtk
http://www.openwall.com/lists/oss-security/2026/09/14/5