CVE-2026-123540 — LOW (2.0)

Vulnerability Description

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.

CVSS Score

2.0

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-116

References

FAQ

What is CVE-2026-123540?

CVE-2026-123540 is a vulnerability with a CVSS score of 2.0 (LOW). 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 au...

How severe is CVE-2026-123540?

CVE-2026-123540 has been rated LOW with a CVSS base score of 2.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-123540?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.