{"id":"GHSA-fq9h-c788-fx73","summary":"OpenAM has pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl)","details":"### Summary\n\nThe OAuth 2.0 / OpenID Connect authorization endpoint does not sufficiently sanitize certain user-supplied parameters before incorporating them into the HTML response generated for the `form_post` response mode. This may allow an attacker to inject content into the rendered page in the context of the OpenAM origin.","aliases":["CVE-2026-44203"],"modified":"2026-06-22T20:41:30.718635Z","published":"2026-06-22T20:11:49Z","database_specific":{"cwe_ids":["CWE-79"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-06-22T20:11:49Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fq9h-c788-fx73"},{"type":"PACKAGE","url":"https://github.com/OpenIdentityPlatform/OpenAM"},{"type":"WEB","url":"https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1"}],"affected":[{"package":{"name":"org.openidentityplatform.openam:openam-oauth2","ecosystem":"Maven","purl":"pkg:maven/org.openidentityplatform.openam/openam-oauth2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13.0.0"},{"fixed":"16.1.1"}]}],"versions":["14.5.2","14.5.3","14.5.4","14.6.1","14.6.2","14.6.3","14.6.4","14.6.5","14.6.6","14.7.0","14.7.1","14.7.2","14.7.3","14.7.4","14.8.1","14.8.2","14.8.3","14.8.4","15.0.0","15.0.1","15.0.2","15.0.3","15.0.4","15.1.0","15.1.1","15.1.2","15.1.3","15.1.4","15.1.5","15.1.6","15.2.0","15.2.1","15.2.2","16.0.1","16.0.2","16.0.3","16.0.4","16.0.5","16.0.6","16.1.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-fq9h-c788-fx73/GHSA-fq9h-c788-fx73.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"}]}