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Back to active CVEs
Medium · CVSS 9.1CVE-2026-48717GHSA-4V2W-2WQP-MC85

OpenAM OAuth Authorization Bypass via PKCE ChallengeCVE-2026-48717

Answer in brief

CVE-2026-48717 records a Medium severity (CVSS 9.1) vulnerability in OpenAM OAuth Authorization Bypass via PKCE Challenge. The current sources do not mark it as known exploited. The current feed maps OpenIdentityPlatform/OpenAM (generic), org.openidentityplatform.openam:openam-oauth2 (maven), org.openidentityplatform.openam:openam-oauth2 (maven). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 23, 2026Source checked Nov 1, 2026First seen by HOL Jun 29, 2026Material review Sep 23, 2026
Upstream Advisory

Record context

Vulnerability class
Privilege Escalation
EPSS
Not reported
CWE IDs
CWE-285
Source
CVE List V5
Source checked
Nov 1, 2026
References
5 linked sources
Open source record

Key facts

Risk
Medium · CVSS 9.1
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps OpenIdentityPlatform/OpenAM (generic), org.openidentityplatform.openam:openam-oauth2 (maven), org.openidentityplatform.openam:openam-oauth2 (maven). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OpenIdentityPlatform/OpenAMgeneric<16.1.116.1.1
org.openidentityplatform.openam:openam-oauth2maven<=16.0.616.1.1
org.openidentityplatform.openam:openam-oauth2maven>=0 <16.1.116.1.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OpenIdentityPlatform/OpenAM, org.openidentityplatform.openam:openam-oauth2, org.openidentityplatform.openam:openam-oauth2.
  2. 2Review the reported fix. Update OpenIdentityPlatform/OpenAM to 16.1.1; org.openidentityplatform.openam:openam-oauth2 to 16.1.1; org.openidentityplatform.openam:openam-oauth2 to 16.1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 29, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.