Improper Claim Validation in PingAM OIDC Provider
Priority MEDIUM 44CWE-290Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-290.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00577 47th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Ping Identity | PingAM | 8.1.0 and later; 8.0.0 – 8.0.2; 7.5.0 – 7.5.2; 7.4.0 – 7.4.2; 7.3.0 – 7.3.3; 7.2.0 – 7.2.2; 7.1.0 – 7.1.4; 7.0.0 – 7.0.2; before 7.0.0 | — | No fix listed | CNA |
- PingAM VendorPing Identity Affected 8.1.0 and later; 8.0.0 – 8.0.2; 7.5.0 – 7.5.2; 7.4.0 – 7.4.2; 7.3.0 – 7.3.3; 7.2.0 – 7.2.2; 7.1.0 – 7.1.4; 7.0.0 – 7.0.2; before 7.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21391
- 2026-10-03 Alias added: GHSA-cvq5-qf5h-v345
More Ping Identity vulnerabilities
- TI-2018-15786 UnboundID LDAP SDK version from commit 801111d up to… CVSS 3.0CRITICAL 9.8
- TI-2020-08561 Ping Identity PingID SSH before 4.0.14 contains a heap buffer overflow in PingID-enrolled… CVSS 3.1CRITICAL 9.8
- TI-2025-14368 PingAM Java Policy Agent path traversal CVSS 4.0CRITICAL 9.2
- TI-2023-21350 PingFederate OAuth client_secret_jwt Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2023-20828 PingFederate PingID Radius PCV Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2023-18913 Authentication Bypass via HTML Form & Identifier First Adapter CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-21391 · CVE Program
- CVE-2026-21391 · NVD
- FIRST EPSS
- GHSA-cvq5-qf5h-v345 · GitHub Advisory Database · CC BY 4.0
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