---
id: CVE-2026-62263
title: Open Access Management (OpenAM) is an access management solution
summary: >-
  Open Access Management (OpenAM) is an access management solution. Prior to
  16.1.2, WebAuthnAuthentication.deserialize applies an ObjectInputFilter that
  allows every serialized object at depth greater than 1 and therefore
  constrains only …
severity: critical
cvss: 9.2
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-502
vendor: OpenIdentityPlatform
product: OpenAM
affected:
  - OpenAM < 16.1.2
patched:
  - 'org.openidentityplatform.openam:openam-auth-webauthn 16.1.2'
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-2026-62263'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/commit/9dd0fbe07f70f118cf45042d3a9ffb32f3c21e08
    label: security-advisories@github.com
  - url: 'https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-gf8h-gq53-288j
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-gf8h-gq53-288j'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
epss: 0.0086
epssPercentile: 0.56778
aliases:
  - GHSA-gf8h-gq53-288j
ecosystem: maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T13:26:16.953354Z'
cvssSource: cna
ingestedAt: '2026-07-24T21:39:14.712Z'
---

## Overview

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, WebAuthnAuthentication.deserialize applies an ObjectInputFilter that allows every serialized object at depth greater than 1 and therefore constrains only an AuthenticatorImpl root object. A pre-authentication attacker can supply a userHandle whose serialized graph has a valid AuthenticatorImpl root and a nested gadget class, causing readObject or readResolve execution before the cast and assertion verification when a usable gadget is on the classpath. This bypasses the incomplete remediation for the earlier WebAuthn deserialization vulnerability. This issue is fixed in version 16.1.2.

## Remediation

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

## Package advisory (CVE-2026-62263)

Affected packages:

- `org.openidentityplatform.openam:openam-auth-webauthn <= 16.1.1`

Patched in:

- `org.openidentityplatform.openam:openam-auth-webauthn 16.1.2`

Source: https://github.com/advisories/GHSA-gf8h-gq53-288j