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vuln-cve/data/2026/89xxx/CVE-2026-89134.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-89134",
"assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
"state": "PUBLISHED",
"assignerShortName": "wolfSSL",
"dateReserved": "2026-09-10T22:37:22.616Z",
"datePublished": "2026-09-27T09:16:58.067Z",
"dateUpdated": "2026-09-29T16:37:26.748Z"
},
"containers": {
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"orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
"shortName": "wolfSSL",
"dateUpdated": "2026-09-27T09:16:58.067Z"
},
"title": "Subject CN name-constraint check bypassed when non-DNS SAN present",
"datePublic": "2026-09-26T12:00:00.000Z",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-295",
"description": "CWE-295 Improper Certificate Validation",
"type": "CWE"
}
]
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"affected": [
{
"vendor": "wolfSSL",
"product": "wolfSSL",
"versions": [
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"status": "affected",
"version": "5.9.2",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
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"lang": "en",
"value": "A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of \"no dNSName SAN\", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2.",
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"value": "A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of \"no dNSName SAN\", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2."
}
]
}
],
"references": [
{
"url": "https://github.com/wolfSSL/wolfssl/pull/10837"
}
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"format": "CVSS",
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"lang": "en",
"value": "GENERAL"
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"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "MEDIUM",
"baseScore": 6.3,
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
}
}
],
"credits": [
{
"lang": "en",
"value": "Jorge Milla (Pig-Tail)",
"type": "finder"
}
],
"source": {
"discovery": "EXTERNAL"
},
"x_generator": {
"engine": "Vulnogram 1.0.1"
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"metrics": [
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"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-29T16:35:44.388156Z",
"id": "CVE-2026-89134",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "yes"
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{
"Technical Impact": "partial"
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],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-29T16:37:26.748Z"
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}