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CVE-2026-21391— Improper Claim Validation in PingAM OIDC Provider

Quick assessment

Affected
Ping Identity PingAM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ping Identity PingAM是美国Ping Identity公司的一款身份认证与权限管理软件。 Ping Identity PingAM 7.0.0之前版本、7.0.0版本至7.0.2版本、7.1.0版本至7.1.4版本、7.2.0版本至7.2.2版本、7.3.0版本至7.3.3版本、7.4.0版本至7.4.2版本、7.5.0版本至7.5.2版本、8.0.0版本至8.0.2版本和8.1.0版本存在授权问题漏洞，该漏洞源于验证不当，特制请求允许设置或覆盖任意或受保护的ID Token声明，在某些

CVSS 9.5 · Critical EPSS 0.58% · P47

Affected Version Matrix 9

VendorProduct Version RangeStatus
Ping Identity PingAM 8.1.0 affected
8.0.0≤ 8.0.2 affected
7.5.0≤ 7.5.2 affected
7.4.0≤ 7.4.2 affected
7.3.0≤ 7.3.3 affected
7.2.0≤ 7.2.2 affected
7.1.0≤ 7.1.4 affected
7.0.0≤ 7.0.2 affected
… +1 more rows
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I. Basic Information for CVE-2026-21391

Vulnerability Information
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Vulnerability Title
Improper Claim Validation in PingAM OIDC Provider
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Ping Identity PingAM 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ping Identity PingAM是美国Ping Identity公司的一款身份认证与权限管理软件。 Ping Identity PingAM 7.0.0之前版本、7.0.0版本至7.0.2版本、7.1.0版本至7.1.4版本、7.2.0版本至7.2.2版本、7.3.0版本至7.3.3版本、7.4.0版本至7.4.2版本、7.5.0版本至7.5.2版本、8.0.0版本至8.0.2版本和8.1.0版本存在授权问题漏洞，该漏洞源于验证不当，特制请求允许设置或覆盖任意或受保护的ID Token声明，在某些
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ping Identity PingAM 8.1.0 -

II. Public POCs for CVE-2026-21391

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III. Intelligence Information for CVE-2026-21391

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Vendor Advisories for CVE-2026-21391 (1)

IV. Related Vulnerabilities

Same product: PingAM
Same vendor: Ping Identity
Same weakness: CWE-290