rootpwn

high · CVSS v3 6.8 · CVSS v4 7.6

CVE-2026-105119

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose response_type is …

Description

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose response_type is exactly code, so codes issued through OpenID Connect hybrid flows (code token, code id_token, code token id_token) carry no bound challenge. An attacker who intercepts such a code can redeem it for a public client's tokens with any non-empty code_verifier.

Scores

Severity
high
CVSS v2
7.1
CVSS v3
6.8
CVSS v4
7.6
EPSS
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