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CVE-2026-53660

OpenAM Insecure SSO Cookie Initialization

CVSS 4.0 7.4 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-53660

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-53660

Published

OpenAM

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "OpenIdentityPlatform",
                    "product": "OpenAM",
                    "versions": [
                        {
                            "version": "< 16.1.1",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON