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vuln-cve/data/2026/40xxx/CVE-2026-40910.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-40910",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-15T16:37:22.767Z",
"datePublished": "2026-04-21T20:09:00.893Z",
"dateUpdated": "2026-04-21T20:28:48.579Z"
},
"containers": {
"cna": {
"title": "frp: Authentication bypass in frp HTTP vhost routing when routeByHTTPUser is used for access control",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"lang": "en",
"description": "CWE-287: Improper Authentication",
"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/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9"
}
],
"affected": [
{
"vendor": "fatedier",
"product": "frp",
"versions": [
{
"version": "< 0.68.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-21T20:09:00.893Z"
},
"descriptions": [
{
"lang": "en",
"value": "frp is a fast reverse proxy. From 0.43.0 to 0.68.0, frp contains an authentication bypass in the HTTP vhost routing path when routeByHTTPUser is used as part of access control. In proxy-style requests, the routing logic uses the username from Proxy-Authorization to select the routeByHTTPUser backend, while the access control check uses credentials from the regular Authorization header. As a result, an attacker who can reach the HTTP vhost entrypoint and knows or can guess the protected routeByHTTPUser value may access a backend protected by httpUser / httpPassword even with an incorrect Proxy-Authorization password. This issue affects deployments that explicitly use routeByHTTPUser. It does not affect ordinary HTTP proxies that do not use this feature. This vulnerability is fixed in 0.68.1."
}
],
"source": {
"advisory": "GHSA-pq96-pwvg-vrr9",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-21T20:28:44.365794Z",
"id": "CVE-2026-40910",
"options": [
{
"Exploitation": "poc"
},
{
"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": "2026-04-21T20:28:48.579Z"
}
}
]
}
}