CVE-2026-73191CWE-601

CVE-2026-73191

Medium · published September 14, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
22.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00307 · 22.2th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-09-14T18:17Z
References (2)
https://lists.apache.org/thread/vx9bons1znhdkdpsxwjpy6qqqjc8xqtk · [email protected]http://www.openwall.com/lists/oss-security/2026/09/14/5 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 17 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 14 SEP 13:24Z
    Apache Syncope: CAS service URL injection via Forwarded HTTP headers
    cvelistv5