CVE-2026-105119

Medium

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.

SeverityMedium

CVSS6.8

Exploit probability—

ProductOpenAM

PublishedOct 3, 2026

First seenOct 3, 2026

Weakness typeCWE-285CWE-285

How to fix

Update

OpenIdentityPlatform OpenAM16.1.3 or later

Vendor advisories

github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-5p2f-7vcr-6vfh

Affected products

Product	Affected versions	Fixed in
OpenIdentityPlatform OpenAM	v < 16.1.3	16.1.3

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