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.
Published: 2026-10-03
Score: 7.6 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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History

Tue, 06 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 03 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
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.
Title OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 Hybrid Flows
First Time appeared Openidentityplatform
Openidentityplatform openam
Weaknesses CWE-285
CPEs cpe:2.3:a:openidentityplatform:openam:*:*:*:*:*:*:*:*
Vendors & Products Openidentityplatform
Openidentityplatform openam
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 7.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Openidentityplatform Openam
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-06T16:49:11.073Z

Reserved: 2026-10-03T12:04:36.964Z

Link: CVE-2026-105119

cve-icon Vulnrichment

Updated: 2026-10-06T16:49:07.320Z

cve-icon NVD

Status : Deferred

Published: 2026-10-03T14:16:38.710

Modified: 2026-10-06T17:17:17.240

Link: CVE-2026-105119

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-03T15:30:19Z

Weaknesses