Improper Authentication in SAML SSO - Service Provider - CVE-2026-87947
Published: September 11, 2026
Vulnerability identifier: #VU148966
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-87947
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the affected module does not properly restrict which signature algorithm may be used to validate a SAML assertion. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Affected software
SAML SSO - Service Provider
How to mitigate CVE-2026-87947
Install updates from vendor's website.
SAML SSO - Service Provider - update to 3.2.0