CVE-2026-123540
Published:November 08, 2026
Updated:November 09, 2026
OpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controlling a trusted identity provider can craft assertion attribute names or values that reach the target application in modified form, undermining the integrity of received attributes.
Affected Packages
https://github.com/OpenIdentityPlatform/OpenAM.git (GITHUB):
Affected version(s) >=9.5 <16.1.4 || >=10.0.0 <16.1.4 || =11.0.0 <16.1.4 || >=12.0.0 <16.1.4 || >=13.0.0-RC1 <16.1.4 || >=14.0.0-M1 <16.1.4 || >=15.0.0 <16.1.4 || >=16.0.0-RC1 <16.1.4Fix Suggestion:
Update to version 16.1.4org.openidentityplatform.openam:openam-federation-library (JAVA):
Affected version(s) >=16.0.1 <16.1.4 || >=14.5.2 <16.1.4 || >=15.0.0 <16.1.4Fix Suggestion:
Update to version 16.1.4Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
HIGH
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
2
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Encoding or Escaping of Output
EPSS
Base Score:
0.18