# CVE-2026-121825: Open redirect in the Liberty ID-FF service provider single sign-on flow

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

OpenAM (OpenAM Consortium Edition) 14.0.5 and earlier contains an open redirect vulnerability (CWE-601) in the Liberty ID-FF service provider single sign-on flow. The goto parameter of the /preLogin endpoint is stored as the RelayState of the Liberty ID-FF authentication request without validation, and after the user completes single sign-on at the identity provider, the assertion consumer service redirects the browser to that value. A remote unauthenticated attacker can induce a user to access a crafted URL and, after the user authenticates, redirect the user to an arbitrary website, which may be used for phishing. Only deployments in which a Liberty ID-FF hosted service provider is configured are affected; Liberty ID-FF is not configured by default. This issue is fixed in 14.0.6, which disables the legacy Liberty ID-FF endpoints.

## Remediation

- fix: Upgrade to OpenAM (OpenAM Consortium Edition) 14.0.6 or later. Note that 14.0.6 disables the legacy Liberty ID-FF endpoints. (source: CNA: openam-jp)
- workaround: If Liberty ID-FF is not used, remove the Liberty ID-FF servlet mappings (including /preLogin, /IntersiteTransferService and /AssertionConsumerService/*) from WEB-INF/web.xml, or block access to these endpoints at a reverse proxy or web application firewall. (source: CNA: openam-jp)

## Affected products and versions

- OpenAM consortium / OpenAM (OpenAM Consortium Edition): ≥ 14.0.0; < 14.0.6 (affected, semver). Source: CNA: openam-jp

## Severity and prioritization

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N; source: CNA: openam-jp

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: openam-jp

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-601

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://openam-jp.github.io/Advisories/CVE-2026-121825/ (CNA: openam-jp; vendor-advisory)

- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-5c3q-hp86-xjr8 (CNA: openam-jp; related)

## Provenance

- CNA: openam-jp: https://www.cve.org/CVERecord?id=CVE-2026-121825; retrieved 2026-11-09; source updated 2026-11-09

Revision: 4092745600a758148fd12c12d3ff8129d0fb155e16b09affd2bcf23ec33123cf

Canonical: https://y2.dev/cve/CVE-2026-121825

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