---
id: CVE-2026-47426
title: Open Access Management (OpenAM) is an access management solution
summary: >-
  Open Access Management (OpenAM) is an access management solution. Prior to
  16.1.1, the private_key_jwt client authentication path uses
  ClientJwksResolverCache without reliably binding a cached jwks_uri resolver
  and verified assertion to …
severity: high
cvss: 7.6
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-287
vendor: OpenIdentityPlatform
product: OpenAM
affected:
  - OpenAM < 16.1.1
patched:
  - 'org.openidentityplatform.openam:openam-oauth2 16.1.1'
published: '2026-09-15'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:19:19.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-47426'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/commit/91acaf499162097ec83bcd729275ba7a12e1bd21
    label: security-advisories@github.com
  - url: 'https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-f2cx-463q-7m2c
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-f2cx-463q-7m2c'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
epss: 0.00395
epssPercentile: 0.33568
ecosystem: maven
cvssSource: cna
ingestedAt: '2026-06-29T21:48:47.458Z'
---

## Overview

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the private_key_jwt client authentication path uses ClientJwksResolverCache without reliably binding a cached jwks_uri resolver and verified assertion to the expected clientID in ClientCredentialsReader. An attacker controlling any registered client with published keys, including one obtained through open dynamic registration when enabled, can authenticate as another client whose keys are exposed through jwks_uri and mint tokens in that client's name across realms in the same OpenAM process. This issue is fixed in version 16.1.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-47426)

Affected packages:

- `org.openidentityplatform.openam:openam-oauth2 <= 16.0.6`

Patched in:

- `org.openidentityplatform.openam:openam-oauth2 16.1.1`

Source: https://github.com/advisories/GHSA-f2cx-463q-7m2c