CVE-2026-53660 PUBLISHED

OpenAM Insecure SSO Cookie Initialization

Assigner: GitHub_M
Reserved: 09.06.2026 Published: 15.09.2026 Updated: 15.09.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 7.4

Product Status

Vendor OpenIdentityPlatform
Product OpenAM
Versions
  • Version < 16.1.1 is affected

References

Problem Types

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