Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-6c99-87fr-6q7r

OpenAM: Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage

CVSS 9.2 CriticalCriticalEPSS 0.0069 · 52nd percentile

Critical, because:

  • CVSS score 9.2: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 24 Jun 2026, 17:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.openidentityplatform.openam:openam-auth-webauthnMaven<16.1.116.1.1
Identifiers
GHSA-6c99-87fr-6q7r · CVE-2026-45051
Weakness (CWE)
CWE-502
Tags
Published
24 Jun 2026
Updated
28 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

OpenAM's WebAuthn authentication module, Maven package org.openidentityplatform.openam:openam-auth-webauthn, is vulnerable to Java deserialization of untrusted data in versions before 16.1.1. An attacker who can write attacker-controlled data to the storage attribute the module reads, and who can reach the WebAuthn flow, could run arbitrary code as the application server user. Upgrade to version 16.1.1.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.2 Critical 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0069, the 52nd percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.