Description
OpenAM before 16.1.4 fails to enforce PKCE in the OAuth 2.0 device authorization flow, never validating the code verifier when device codes are exchanged for tokens. Attackers who obtain an approved device code from client logs or shared device storage can redeem it for access and ID tokens to impersonate the user.
Published: 2026-11-08
Score: 7.6 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Sun, 08 Nov 2026 01:45:00 +0000

Type Values Removed Values Added
Description OpenAM before 16.1.4 fails to enforce PKCE in the OAuth 2.0 device authorization flow, never validating the code verifier when device codes are exchanged for tokens. Attackers who obtain an approved device code from client logs or shared device storage can redeem it for access and ID tokens to impersonate the user.
Title OpenAM before 16.1.4 PKCE Bypass in OAuth 2.0 Device Authorization Flow
First Time appeared Openidentityplatform
Openidentityplatform openam
Weaknesses CWE-358
CPEs cpe:2.3:a:openidentityplatform:openam:*:*:*:*:*:*:*:*
Vendors & Products Openidentityplatform
Openidentityplatform openam
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 7.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Openidentityplatform Openam
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-08T01:37:48.668Z

Reserved: 2026-11-06T00:48:46.279Z

Link: CVE-2026-123542

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-08T02:16:45.100

Modified: 2026-11-08T02:16:45.100

Link: CVE-2026-123542

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-358

    Improperly Implemented Security Check for Standard