# CVE-2026-123553: OpenAM before 16.1.4 Default Credentials in Built-in Accounts Allow Unauthenticated Login

Status: published. Published: 2026-11-08. Updated: 2026-11-10.

OpenAM before 16.1.4 ships built-in identities in the Top Level Realm (demo, anonymous, wsc, wsp, SecurityTokenService and agentAuth) with passwords that are identical on every installation, publicly known, and able to authenticate. Unauthenticated remote attackers can log in as these identities to obtain authenticated sessions, and the agent identities can read the configuration of other agent profiles.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- OpenIdentityPlatform / OpenAM (org.openidentityplatform.openam/openam-core): ≥ 0; < 16.1.4 (affected, semver); 16.1.4 (unaffected, semver). Source: CNA: VulnCheck
- 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-core-rest): ≥ 0; < 16.1.4 (affected, semver); 16.1.4 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: CNA: VulnCheck

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/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: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.25% as of 2026-11-10; percentile 16.97%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-1392

## Exploit evidence

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

## References

- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-hvfc-4v4r-8p9w (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/openam-before-16.1.4-default-credentials-in-built-in-accounts-allow-unauthenticated-login (CNA: VulnCheck; third-party-advisory)

- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-hvfc-4v4r-8p9w (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/openam-before-16.1.4-default-credentials-in-built-in-accounts-allow-unauthenticated-login (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-123553; retrieved 2026-11-10; source updated 2026-11-10

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-123553; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-123553; retrieved 2026-11-10; source updated Not reported

Revision: a81c3892c91634e2d875c64e413c1a0a446c4ddff424d5819056a46641916f12

Canonical: https://y2.dev/cve/CVE-2026-123553

## 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.