# CVE-2026-53660

## Summary

- **CVE ID:** CVE-2026-53660
- **Severity:** HIGH
- **CVSS Score:** 7.4 (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)
- **CWE:** CWE-1004, CWE-1188, CWE-1275
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 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.

## Affected Products

- OpenIdentityPlatform — OpenAM (< 16.1.1)

## References

- [CNA](https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fpmh-vx4h-xc33)
- [CNA](https://github.com/OpenIdentityPlatform/OpenAM/commit/2af597267e6eb9302f75445c2c726f9b84f62966)
- [CNA](https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 26.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._