Open redirect in OpenAM via SAML RelayState
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-601.
Summary
OpenIdentityPlatform OpenAM before 16.1.4 contains an open redirect in its SAML v2.0 RelayState handling. When no relayStateUrlList is configured, RelayState is not checked, so users can be redirected to external sites (CWE-601). An unauthenticated remote attacker can craft single sign-on links with a malicious RelayState to send users from the trusted OpenAM origin to phishing sites and bypass URL filters.
Written with Claude Haiku 5.5 from the sources below · 2026-11-08
Description from the CNA
OpenAM before 16.1.4 contains an open redirect vulnerability that allows attackers to redirect users to external sites because RelayState is unchecked when no relayStateUrlList is configured. Attackers can craft single sign-on links with a malicious RelayState to send users from the trusted OpenAM origin to phishing sites and bypass URL filters.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenIdentityPlatform | OpenAM | before 16.1.4 | 16.1.4 | Patch available | CNA |
| OpenIdentityPlatform | OpenAM | before 16.1.4 | 16.1.4 | Patch available | CNA |
- OpenAM VendorOpenIdentityPlatform Affected before 16.1.4 Fixed in 16.1.4 Patch available CNA
- OpenAM VendorOpenIdentityPlatform Affected before 16.1.4 Fixed in 16.1.4 Patch available CNA
Remediation
Upgrade OpenAM to version 16.1.4, the fixed version for OpenIdentityPlatform OpenAM.
Written with Claude Haiku 5.5 from the sources below · 2026-11-08
- Fix · CNA OpenAM (OpenIdentityPlatform) Fixed in 16.1.4
- Fix · CNA OpenAM (OpenIdentityPlatform) Fixed in 16.1.4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenIdentityPlatform OpenAM 16.1.4
18 records Highest priority Priority MEDIUM 3 MEDIUM, 15 LOW
Other records, highest priority first
- TI-2026-86693 Session token disclosure in OpenAM notification WebSocketPriority MEDIUM 43
- TI-2026-86692 Authentication bypass in OpenAM SAML login accepts unsigned assertionsPriority MEDIUM 41
- TI-2026-86691 Privilege escalation in OpenAM via self-registration attribute bypassPriority MEDIUM 40
Timeline
- 2026-11-08 Threatist record created from CVE-2026-123547
- 2026-11-08 Alias added: GHSA-26f2-35v8-467g
References
More OpenIdentityPlatform vulnerabilities
- 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-2026-44519 OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback CVSS 3.1CRITICAL 9.8
- TI-2023-19079 User impersonation using SAMLv1.x SSO in Open Access Management CVSS 3.1CRITICAL 9.8
- TI-2026-34275 OpenAM Authentication Bypass via MSISDN LDAP Injection CVSS 4.0CRITICAL 9.3
- TI-2026-32901 OpenAM Pre-auth User Profile Tampering via Anonymous SOAP Authn in Liberty IDPP/Discovery Endpoints CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-123547 · CVE Program
- CVE-2026-123547 · NVD
- FIRST EPSS
- GHSA-26f2-35v8-467g · GitHub Advisory Database · CC BY 4.0
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