CVE-2026-21391

{"id": "CVE-2026-21391", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21391", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-14T14:24:57.614272Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "responsible-disclosure@pingidentity.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.5, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "responsible-disclosure@pingidentity.com", "affectedData": [{"vendor": "Ping Identity", "product": "PingAM", "versions": [{"status": "affected", "version": "8.1.0", "versionType": "semver"}, {"status": "affected", "version": "8.0.0", "versionType": "semver", "lessThanOrEqual": "8.0.2"}, {"status": "affected", "version": "7.5.0", "versionType": "semver", "lessThanOrEqual": "7.5.2"}, {"status": "affected", "version": "7.4.0", "versionType": "semver", "lessThanOrEqual": "7.4.2"}, {"status": "affected", "version": "7.3.0", "versionType": "semver", "lessThanOrEqual": "7.3.3"}, {"status": "affected", "version": "7.2.0", "versionType": "semver", "lessThanOrEqual": "7.2.2"}, {"status": "affected", "version": "7.1.0", "versionType": "semver", "lessThanOrEqual": "7.1.4"}, {"status": "affected", "version": "7.0.0", "versionType": "semver", "lessThanOrEqual": "7.0.2"}, {"status": "affected", "changes": [{"at": "0", "status": "affected"}], "version": "0", "lessThan": "7.0.0", "versionType": "semver"}], "defaultStatus": "affected"}]}], "published": "2026-09-14T12:17:38.810", "references": [{"url": "https://support.pingidentity.com/s/article/PingAM-Security-Advisory-202603", "source": "responsible-disclosure@pingidentity.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "responsible-disclosure@pingidentity.com", "description": [{"lang": "en", "value": "CWE-290"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-14T15:17:04.850", "sourceIdentifier": "responsible-disclosure@pingidentity.com"}