---
id: CVE-2026-48717
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, AuthorizationCodeGrantTypeHandler requires a code_verifier only when
  the realm-wide codeVerifierEnforced setting is enabled, even when an
  authorization co…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-285
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: '2026-09-23T18:21:42.327'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48717'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/commit/97a34d9fee17395e8e052bfc45eb5855f436153e
    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-4v2w-2wqp-mc85
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-4v2w-2wqp-mc85'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
epss: 0.00327
epssPercentile: 0.26041
ecosystem: maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T13:25:12.374530Z'
cvssSource: cna
ingestedAt: '2026-06-29T21:48:47.456Z'
---

## Overview

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a code_verifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization code stores a code_challenge. Because that setting is disabled by default, an attacker who intercepts a PKCE-protected authorization code can omit code_verifier and redeem the code, while an explicitly incorrect verifier is rejected. Public clients are directly affected, and confidential-client exploitation additionally requires client authentication material or another redemption context. 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-2026-48717)

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-4v2w-2wqp-mc85