CVE-2026-73191

Summary

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 Software

VendorProductVersion RangeStatus
Apache Software FoundationApache Syncope3.0.0-M0 <= 3.0.16affected
Apache Software FoundationApache Syncope4.0.0-M0 <= 4.0.7affected
Apache Software FoundationApache Syncope4.1.0-M0 <= 4.1.2affected

Weaknesses

  • CWE-601: CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References