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Advisory record · GHSA-gf57-4mp6-m85x

OpenAM Account Takeover via Unverified Password Change in OAuth2 Module

CVSS 7.4 HighEPSS 0.0067 · 52nd percentile

Published by the GitHub Advisory Database at 26 Jun 2026, 17:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.openidentityplatform.openam:openam-auth-oauth2Maven<16.1.116.1.1
Identifiers
GHSA-gf57-4mp6-m85x · CVE-2026-46623
Weakness (CWE)
CWE-620 · CWE-1391
Tags
Published
26 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 OAuth2 authentication module (openam-auth-oauth2, Maven) before 16.1.1 silently sets a local user's password to their username when that user logs in again through OAuth2. An unauthenticated attacker can then sign in as that user with the username as both identifier and password through the default ldapService chain, gaining the victim's privileges. Upgrade to version 16.1.1 or later.

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
7.4 High 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0067, the 52nd percentile, on 5 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.