CVE-2026-21391

Improper Claim Validation in PingAM OIDC Provider

Published Sep 14, 2026 CVSS 4.0 · 9.5 Critical EPSS < 1% KEV · Not listed
Description
An improper validation vulnerability exists within PingAM where a well-crafted request allows arbitrary or protected ID Token claims to be set or overridden. In certain configurations this could allow an attacker to bypass authentication controls via spoofing leading to privilege escalation or impersonation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description An improper validation vulnerability exists within PingAM where a well-crafted request allows arbitrary or protected ID Token claims to be set or overridden. In certain configurations this could allow an attacker to bypass authentication controls via spoofing leading to privilege escalation or impersonation.
Title Improper Claim Validation in PingAM OIDC Provider
Weaknesses CWE-290
References
Metrics cvssV4_0

{'score': 9.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Ping Identity
Published
Updated
Sep 14, 2026, 2:25 PM
Reserved
Jan 7, 2026, 3:15 PM
Status
Awaiting Analysis
Published
Sep 14, 2026, 12:17 PM
Modified
Sep 18, 2026, 7:30 PM