CVE-2026-53660

OpenAM Insecure SSO Cookie Initialization

State: Published
Severity: 7.4 High
Published: Sep 15, 2026
Updated: Sep 15, 2026
Reserved: Jun 9, 2026

Description

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the default configuration initializes the iPlanetDirectoryPro SSO cookie with HttpOnly disabled and without a protective SameSite default, and OAuth and OpenID Connect consent flows reuse that cookie through CsrfProtection as a CSRF token. When combined with same-origin cross-site scripting and a user following an attacker-controlled link, the cookie can be read and reused to steal the SSO session and complete attacker-driven consent grants. This issue is fixed in version 16.1.1.

Scores

CVSS	Score	Vector	Source
4.0	7.4 High	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-1004 Sensitive Cookie Without 'HttpOnly' Flag
CWE-1188 Insecure Default Initialization of Resource
CWE-1275 Sensitive Cookie with Improper SameSite Attribute

Affected Products

Product	Versions
OpenAMOpenIdentityPlatform	< 16.1.1Affected

References

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