CVE-2026-44203
published 2026-09-15CVE-2026-44203: 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…
PriorityP354high8.3CVSS 4.0
AVNACLATNPRNUIAVCLVIHVANSCLSIHSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.47%
39.5th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openidentityplatform | openam | < 16.1.1 | 16.1.1 |
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GHSA
OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page
ghsa·2026-07-24
CVE-2026-62280 [MEDIUM] CWE-79 OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page
OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page
### Description
The OAuth2/OIDC consent page rendered for `display=wap` authorize requests reflected several request-derived values into the HTML response without escaping. An attacker who induces a user with an active OpenAM session to follow a crafted authorize link can execute arbitrary JavaScript in the OpenAM origin.
This is the same vulnerability class as CVE-2026-44203; that fix did not cover this code path.
### Impact
Arbitrary JavaScript execution in the OpenAM origin in the victim's authenticated context — enabling session/cookie theft, CSRF-token exfiltration, and actions on behalf of the victim, up to administrative takeover if the victim is an administrator. Reachable on any deployment with at least one registered O
GHSA
OpenAM has pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl)
ghsa·2026-06-22
CVE-2026-44203 [CRITICAL] CWE-79 OpenAM has pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl)
OpenAM has pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl)
### Summary
The 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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-09-15
Published