Org.openidentityplatform.openam:openam core: OpenAM Insecure SSO Cookie Initialization (CVE-2026-53660)
## Summary **Description** An Insecure Default Initialization of Resource (CWE-1188) issue in the OpenAM default configuration ships the `iPlanetDirectoryPro` SSO cookie with `HttpOnly=false`. Also, the `iPlanetDirectoryPro` SSO cookie is used as a CSRF token in OAuth/OIDC flows. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1. ## Impact A single click on an attacker link may yield full SSO session theft of any authenticated console user when chained with any other same-origin XSS in the OpenAM origin. The missing `SameSite` default also widens the CSRF surface. Also, because the consent flow reuses the SSO cookie as its CSRF token, any XSS in the OpenAM origin both steals the session and completes attacker-driven OAuth consent grants in one step. ## Patch This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.
AI Analysis
Technical Summary
The vulnerability (CVE-2026-53660) in OpenAM Community Edition involves insecure default initialization of the iPlanetDirectoryPro SSO cookie, which is shipped with HttpOnly set to false and missing a SameSite attribute. Since this cookie is used as a CSRF token in OAuth/OIDC consent flows, an attacker who can exploit any same-origin XSS in the OpenAM origin can steal the SSO session and complete OAuth consent grants without user interaction. This affects versions prior to 16.1.1 and was fixed in 16.1.1.
Potential Impact
An attacker can steal the full SSO session of any authenticated console user by leveraging a same-origin XSS vulnerability combined with this insecure cookie configuration. The missing SameSite attribute widens the CSRF attack surface. Because the SSO cookie doubles as a CSRF token in OAuth/OIDC flows, exploitation can lead to unauthorized OAuth consent grants, effectively allowing attacker-driven OAuth permissions without user consent.
Mitigation Recommendations
This vulnerability has been patched in OpenAM Community Edition version 16.1.1. Users should update to version 16.1.1 or later to remediate this issue. No additional mitigations are specified by the vendor advisory.
Org.openidentityplatform.openam:openam core: OpenAM Insecure SSO Cookie Initialization (CVE-2026-53660)
Description
## Summary **Description** An Insecure Default Initialization of Resource (CWE-1188) issue in the OpenAM default configuration ships the `iPlanetDirectoryPro` SSO cookie with `HttpOnly=false`. Also, the `iPlanetDirectoryPro` SSO cookie is used as a CSRF token in OAuth/OIDC flows. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1. ## Impact A single click on an attacker link may yield full SSO session theft of any authenticated console user when chained with any other same-origin XSS in the OpenAM origin. The missing `SameSite` default also widens the CSRF surface. Also, because the consent flow reuses the SSO cookie as its CSRF token, any XSS in the OpenAM origin both steals the session and completes attacker-driven OAuth consent grants in one step. ## Patch This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.
CVSS v4.0
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability (CVE-2026-53660) in OpenAM Community Edition involves insecure default initialization of the iPlanetDirectoryPro SSO cookie, which is shipped with HttpOnly set to false and missing a SameSite attribute. Since this cookie is used as a CSRF token in OAuth/OIDC consent flows, an attacker who can exploit any same-origin XSS in the OpenAM origin can steal the SSO session and complete OAuth consent grants without user interaction. This affects versions prior to 16.1.1 and was fixed in 16.1.1.
Potential Impact
An attacker can steal the full SSO session of any authenticated console user by leveraging a same-origin XSS vulnerability combined with this insecure cookie configuration. The missing SameSite attribute widens the CSRF attack surface. Because the SSO cookie doubles as a CSRF token in OAuth/OIDC flows, exploitation can lead to unauthorized OAuth consent grants, effectively allowing attacker-driven OAuth permissions without user consent.
Mitigation Recommendations
This vulnerability has been patched in OpenAM Community Edition version 16.1.1. Users should update to version 16.1.1 or later to remediate this issue. No additional mitigations are specified by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fpmh-vx4h-xc33
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53660"]
- Ecosystems
- ["Maven"]
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6a7ff5f6bf8831d539880097
Added to database: 08/15/2026, 05:15:34 UTC
Last enriched: 08/15/2026, 05:41:35 UTC
Last updated: 08/15/2026, 18:11:41 UTC
Views: 4
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