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TI-2026-32182 Aliases CVE-2026-44203GHSA-fq9h-c788-fx73

OpenAM: Pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state parameter (FormPostResponse.ftl)

Priority LOW 39CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00593 48th percentileScored 2026-11-07
Fix Fixed OpenAM (OpenIdentityPlatform): 16.1.1org.openidentityplatform.openam:openam-oauth2 (Maven): 16.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenIdentityPlatformOpenAMbefore 16.1.116.1.1Patch availableCNA
—org.openidentityplatform.openam:openam-oauth2 (Maven)13.0.0 to before 16.1.116.1.1Patch availableGHSA-fq9h-c788-fx73
  • OpenAM VendorOpenIdentityPlatform Affected before 16.1.1 Fixed in 16.1.1 Patch available CNA
  • org.openidentityplatform.openam:openam-oauth2 (Maven) Vendor— Affected 13.0.0 to before 16.1.1 Fixed in 16.1.1 Patch available GHSA-fq9h-c788-fx73

Remediation

  • Fix · CNA OpenAM (OpenIdentityPlatform) Fixed in 16.1.1
  • Fix · GHSA-fq9h-c788-fx73 org.openidentityplatform.openam:openam-oauth2 (Maven) Fixed in 16.1.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44203
  2. 2026-10-03 Alias added: GHSA-fq9h-c788-fx73
  3. 2026-10-28 CVSS score changed · GHSA-fq9h-c788-fx73
  4. 2026-10-28 2 new references · GHSA-fq9h-c788-fx73

References

Advisory 1

Other 4

  • TI-2025-20332 OpenDJ Denial of Service (Dos) using alias loop CVSS 4.0HIGH 8.7
  • TI-2026-25836 Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM CVSS 4.0CRITICAL 9.3
  • TI-2026-86693 Session token disclosure in OpenAM notification WebSocket CVSS 4.0CRITICAL 10.0
  • TI-2026-86692 Authentication bypass in OpenAM SAML login accepts unsigned assertions CVSS 4.0CRITICAL 9.3
  • TI-2026-86691 Privilege escalation in OpenAM via self-registration attribute bypass CVSS 4.0CRITICAL 9.3
  • TI-2026-86685 Unbounded Java deserialization in OpenAM enables denial of service CVSS 4.0HIGH 8.7
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences