Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the OAuth 2.0 and OpenID Connect authorization endpoint does not sufficiently encode user-supplied parameters before FormPostResponse.ftl and checkSession.ftl render them into HTML for the form_post response mode. An unauthenticated attacker can induce a user to open a crafted authorization request and execute script in the OpenAM origin. This issue is fixed in version 16.1.1.
Metrics
Affected Vendors & Products
References
History
Thu, 17 Sep 2026 15:30:00 +0000
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ssvc
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Tue, 15 Sep 2026 12:00:00 +0000
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Openidentityplatform
Openidentityplatform openam |
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| Vendors & Products |
Openidentityplatform
Openidentityplatform openam |
Tue, 15 Sep 2026 10:00:00 +0000
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| Description | Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the OAuth 2.0 and OpenID Connect authorization endpoint does not sufficiently encode user-supplied parameters before FormPostResponse.ftl and checkSession.ftl render them into HTML for the form_post response mode. An unauthenticated attacker can induce a user to open a crafted authorization request and execute script in the OpenAM origin. This issue is fixed in version 16.1.1. | |
| Title | OpenAM: Pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl) | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-15T09:48:07.329Z
Updated: 2026-09-17T14:02:34.668Z
Reserved: 2026-05-05T15:13:47.571Z
Link: CVE-2026-44203
Updated: 2026-09-17T14:02:30.441Z
Status : Awaiting Analysis
Published: 2026-09-15T10:17:03.510
Modified: 2026-09-23T18:19:19.803
Link: CVE-2026-44203
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