CVE-2026-53660: Openidentityplatform Openam

High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Openidentityplatform Openam: before 16.1.1 (fixed in 16.1.1)

Published 2026-09-15. Last modified 2026-09-23.