Medium severity6.8NVD Advisory· Published Nov 8, 2026

CVE-2026-123542

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Openidentityplatform/Openamllm-fuzzy
Range: <16.1.4

Patches

Vulnerability mechanics

References

github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-h93p-35jm-rj83nvd
www.vulncheck.com/advisories/openam-before-16.1.4-pkce-bypass-in-oauth-2.0-device-authorization-flownvd

News mentions

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cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000