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vuln-cve/data/2026/81xxx/CVE-2026-81868.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-81868",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-08-27T17:48:42.118Z",
"datePublished": "2026-09-17T15:36:23.149Z",
"dateUpdated": "2026-09-23T18:46:54.265Z"
},
"containers": {
"cna": {
"title": "Steeltoe: Header-forwarded client cert lacks proof of private-key possession",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-288",
"lang": "en",
"description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-295",
"lang": "en",
"description": "CWE-295: Improper Certificate Validation",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-5mq7-rwhj-4fh9",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-5mq7-rwhj-4fh9"
},
{
"name": "https://github.com/SteeltoeOSS/Steeltoe/commit/b626ef3d60aaf19c68eeeed5ee81045406c8c6d0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/SteeltoeOSS/Steeltoe/commit/b626ef3d60aaf19c68eeeed5ee81045406c8c6d0"
},
{
"name": "https://github.com/SteeltoeOSS/Steeltoe/releases/tag/4.3.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/SteeltoeOSS/Steeltoe/releases/tag/4.3.0"
}
],
"affected": [
{
"vendor": "SteeltoeOSS",
"product": "security-advisories",
"versions": [
{
"version": "< 4.3.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-17T15:36:23.149Z"
},
"descriptions": [
{
"lang": "en",
"value": "Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. Prior to 4.3.0, Steeltoe.Security.Authorization.Certificate deployments using AddOrgAndSpacePolicies() and UseCertificateAuthorization() trust the public certificate supplied in the X-Client-Cert request header without proving possession of the corresponding private key. Common Cloud Foundry routers do not remove this header from inbound requests. When inbound requests are not restricted to a known trusted proxy source IP, an attacker who obtains the public certificate of an application instance in the target organization or space and can reach the application can spoof X-Client-Cert to bypass the SameOrg and SameSpace policies for the certificate validity period. This issue is fixed in version 4.3.0."
}
],
"source": {
"advisory": "GHSA-5mq7-rwhj-4fh9",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-81868",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-23T18:32:10.341865Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-23T18:46:54.265Z"
}
}
]
}
}