CVE-2026-21391 (GCVE-0-2026-21391)
Vulnerability from cvelistv5
Published
2026-09-14 11:18
Modified
2026-09-14 14:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-290 - Authentication bypass by spoofing
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Ping Identity | PingAM |
Version: 8.1.0 ≤ Version: 8.0.0 ≤ 8.0.2 Version: 7.5.0 ≤ 7.5.2 Version: 7.4.0 ≤ 7.4.2 Version: 7.3.0 ≤ 7.3.3 Version: 7.2.0 ≤ 7.2.2 Version: 7.1.0 ≤ 7.1.4 Version: 7.0.0 ≤ 7.0.2 Version: 0 ≤ |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-21391",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-14T14:24:57.614272Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-14T14:25:10.479Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "PingAM",
"vendor": "Ping Identity",
"versions": [
{
"status": "affected",
"version": "8.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.0.2",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.5.2",
"status": "affected",
"version": "7.5.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.2",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.3.3",
"status": "affected",
"version": "7.3.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.2",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.4",
"status": "affected",
"version": "7.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.2",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
},
{
"changes": [
{
"at": "0",
"status": "affected"
}
],
"lessThan": "7.0.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003eAn 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.\u003c/div\u003e\u003cbr\u003e"
}
],
"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."
}
],
"impacts": [
{
"capecId": "CAPEC-21",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-21 Exploitation of Trusted Identifiers"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9.5,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-290",
"description": "CWE-290 Authentication bypass by spoofing",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-14T11:18:33.045Z",
"orgId": "5998a2e9-ae88-42cd-b6e0-7564fd979f9e",
"shortName": "Ping Identity"
},
"references": [
{
"url": "https://support.pingidentity.com/s/article/PingAM-Security-Advisory-202603"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Improper Claim Validation in PingAM OIDC Provider",
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
}
},
"cveMetadata": {
"assignerOrgId": "5998a2e9-ae88-42cd-b6e0-7564fd979f9e",
"assignerShortName": "Ping Identity",
"cveId": "CVE-2026-21391",
"datePublished": "2026-09-14T11:18:33.045Z",
"dateReserved": "2026-01-07T15:15:23.421Z",
"dateUpdated": "2026-09-14T14:25:10.479Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-21391\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-14T14:24:57.614272Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-14T14:25:05.779Z\"}}], \"cna\": {\"title\": \"Improper Claim Validation in PingAM OIDC Provider\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"impacts\": [{\"capecId\": \"CAPEC-21\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-21 Exploitation of Trusted Identifiers\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"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\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"HIGH\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N\"}]}], \"affected\": [{\"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\"}], \"references\": [{\"url\": \"https://support.pingidentity.com/s/article/PingAM-Security-Advisory-202603\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cdiv\u003eAn 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.\u003c/div\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-290\", \"description\": \"CWE-290 Authentication bypass by spoofing\"}]}], \"providerMetadata\": {\"orgId\": \"5998a2e9-ae88-42cd-b6e0-7564fd979f9e\", \"shortName\": \"Ping Identity\", \"dateUpdated\": \"2026-09-14T11:18:33.045Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-21391\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-14T14:25:10.479Z\", \"dateReserved\": \"2026-01-07T15:15:23.421Z\", \"assignerOrgId\": \"5998a2e9-ae88-42cd-b6e0-7564fd979f9e\", \"datePublished\": \"2026-09-14T11:18:33.045Z\", \"assignerShortName\": \"Ping Identity\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…