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vuln-cve/data/2026/101xxx/CVE-2026-101087.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-101087",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-09-27T20:29:07.432Z",
"datePublished": "2026-09-27T20:49:58.749Z",
"dateUpdated": "2026-09-30T14:12:28.088Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck",
"dateUpdated": "2026-09-27T20:49:58.749Z"
},
"datePublic": "2026-08-11T00:00:00.000Z",
"title": "Nezha 2.0.10 through 2.3.2 SSRF Denylist Bypass IPv6",
"descriptions": [
{
"lang": "en",
"value": "Nezha versions 2.0.10 through 2.3.2 use a restricted HTTP client to validate user-configurable notification and DDNS webhook URLs, but the denylist did not cover IPv6 transition ranges — specifically the 6to4 prefix 2002::/16 and the local-use IPv4/IPv6 translation prefix 64:ff9b:1::/48. Because such addresses satisfy Go's netip.Addr.IsGlobalUnicast check, the URL validator accepted them. An authenticated user able to configure a webhook may be able to cause the dashboard to issue requests to an otherwise restricted IPv6 endpoint, but only where the dashboard's network provides unusual or non-standards-compliant routing for these transition ranges; no direct path to an IPv4 metadata, loopback, or private-network HTTP request has been demonstrated. The issue is fixed in version 2.3.3 (commit d1fcde8e), which blocks both prefixes."
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "Server-Side Request Forgery (SSRF)",
"cweId": "CWE-918",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "nezhahq",
"product": "nezha",
"defaultStatus": "unaffected",
"packageURL": "pkg:golang/github.com/nezhahq/nezha",
"versions": [
{
"version": "2.0.10",
"status": "affected",
"versionType": "semver",
"lessThan": "2.3.3"
},
{
"version": "2.3.3",
"status": "unaffected",
"versionType": "semver"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"references": [
{
"url": "https://github.com/nezhahq/nezha/security/advisories/GHSA-jr2j-7hvh-h4q9",
"tags": [
"vendor-advisory"
],
"name": "GitHub Security Advisory (GHSA-jr2j-7hvh-h4q9)"
},
{
"url": "https://github.com/nezhahq/nezha/commit/d1fcde8e",
"tags": [
"patch"
],
"name": "Patch Commit"
},
{
"name": "VulnCheck Advisory: Nezha 2.0.10 through 2.3.2 SSRF Denylist Bypass IPv6",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/nezha-2.0.10-through-2.3.2-ssrf-denylist-bypass-ipv6"
}
],
"x_generator": {
"engine": "vulncheck-endgame"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-30T14:12:20.579702Z",
"id": "CVE-2026-101087",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-30T14:12:28.088Z"
}
}
]
}
}