PT-2026-139823

CVE-2026-123542

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Published

2026-11-08

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Updated

2026-11-08

Description by

CVSS 3.1
6.8
Medium
MetricsAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
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.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-358: Improperly Implemented Security Check for Standard
Related identifiers
CVE-2026-123542
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