HIGH 7.6 NVD
CVE-2026-123542
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 to
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.
References
- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-h93p-35jm-rj83
- https://www.vulncheck.com/advisories/openam-before-16.1.4-pkce-bypass-in-oauth-2.0-device-
This high severity vulnerability with a CVSS score of 7.6 was published on 2026-11-08 via NVD.
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