CVE-2026-21391: CWE-290 Authentication bypass by spoofing in Ping Identity PingAM
CVE-2026-21391 is an authentication bypass vulnerability in Ping Identity's PingAM product. It arises from improper validation that allows crafted requests to set or override ID Token claims. This flaw can lead to privilege escalation or impersonation in certain configurations. The vulnerability affects multiple versions of PingAM up to and including 8.1.0. It has a critical severity with a CVSS score of 9.5.
AI Analysis
Technical Summary
An improper validation vulnerability (CWE-290) in PingAM allows attackers to craft requests that set or override arbitrary or protected ID Token claims. This can bypass authentication controls via spoofing, potentially leading to privilege escalation or impersonation. The vulnerability affects versions from before 7.0.0 through 8.1.0 inclusive. No vendor advisory or patch information is provided in the input data.
Potential Impact
Successful exploitation can bypass authentication mechanisms, allowing attackers to escalate privileges or impersonate users. This compromises the integrity of authentication and authorization processes within PingAM, potentially exposing sensitive resources or administrative functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the input data. Until a patch is available, review configurations to limit exposure and monitor for suspicious activity related to token claims manipulation.
CVE-2026-21391: CWE-290 Authentication bypass by spoofing in Ping Identity PingAM
Description
CVE-2026-21391 is an authentication bypass vulnerability in Ping Identity's PingAM product. It arises from improper validation that allows crafted requests to set or override ID Token claims. This flaw can lead to privilege escalation or impersonation in certain configurations. The vulnerability affects multiple versions of PingAM up to and including 8.1.0. It has a critical severity with a CVSS score of 9.5.
CVSS v4.0
Score 9.5critical
Affected software
Ping Identity
PingAM
pkg:github/pingidentity/pingamRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An improper validation vulnerability (CWE-290) in PingAM allows attackers to craft requests that set or override arbitrary or protected ID Token claims. This can bypass authentication controls via spoofing, potentially leading to privilege escalation or impersonation. The vulnerability affects versions from before 7.0.0 through 8.1.0 inclusive. No vendor advisory or patch information is provided in the input data.
Potential Impact
Successful exploitation can bypass authentication mechanisms, allowing attackers to escalate privileges or impersonate users. This compromises the integrity of authentication and authorization processes within PingAM, potentially exposing sensitive resources or administrative functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the input data. Until a patch is available, review configurations to limit exposure and monitor for suspicious activity related to token claims manipulation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Ping Identity
- Date Reserved
- 2026-01-07T15:15:23.421Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa7db4355bf5e2cf5fb9650
Added to database: 09/14/2026, 11:32:19 UTC
Last enriched: 09/14/2026, 11:46:29 UTC
Last updated: 09/14/2026, 12:26:55 UTC
Views: 5
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