# CVE-2026-123548: OpenAM before 16.1.4 Open Redirect via WS-Federation and SAML v2.0 Pages

Status: published. Published: 2026-11-08. Updated: 2026-11-12.

OpenIdentityPlatform OpenAM before 16.1.4 contains an open redirect because WS-Federation logout, SAML v2.0 logout and name-identifier management, SAML v2.0 identity provider finder, and some authentication pages do not check destination URLs against allowed lists. Attackers can craft OpenAM-domain links that send users to arbitrary external sites for phishing.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- OpenIdentityPlatform / OpenAM (org.openidentityplatform.openam/openam-server-only): ≥ 0; < 16.1.4 (affected, semver); 16.1.4 (unaffected, semver). Source: CNA: VulnCheck
- OpenIdentityPlatform / OpenAM (org.openidentityplatform.openam/openam-federation-library): ≥ 0; < 16.1.4 (affected, semver); 16.1.4 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 2.3 (low); CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 4.7 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: VulnCheck

- CVSS 4.0: 2.3 (low); CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 4.7 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.20% as of 2026-11-10; percentile 9.39%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-601

## Exploit evidence

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

## References

- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-mgwg-24cx-c8w3 (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/openam-before-16.1.4-open-redirect-via-ws-federation-and-saml-2.0-pages (CNA: VulnCheck; third-party-advisory)

- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-mgwg-24cx-c8w3 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/openam-before-16.1.4-open-redirect-via-ws-federation-and-saml-2.0-pages (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-123548; retrieved 2026-11-12; source updated 2026-11-12

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-123548; retrieved 2026-11-11; source updated 2026-11-10

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-123548; retrieved 2026-11-11; source updated Not reported

Revision: 18e8de6ad1fe0dae5d5e75dd4be6c6cdc0c95386b290c4a413b51b805f3ef12e

Canonical: https://y2.dev/cve/CVE-2026-123548

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.