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vuln-cve/data/2026/40xxx/CVE-2026-40189.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-40189",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-09T20:59:17.620Z",
"datePublished": "2026-04-10T19:44:54.672Z",
"dateUpdated": "2026-04-13T20:53:02.400Z"
},
"containers": {
"cna": {
"title": "goshs has a file-based ACL authorization bypass in goshs state-changing routes",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"lang": "en",
"description": "CWE-862: Missing Authorization",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx"
},
{
"name": "https://github.com/patrickhener/goshs/commit/f212c4f4a126556bab008f79758e21a839ef2c0f",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/patrickhener/goshs/commit/f212c4f4a126556bab008f79758e21a839ef2c0f"
},
{
"name": "https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4"
}
],
"affected": [
{
"vendor": "patrickhener",
"product": "goshs",
"versions": [
{
"version": "< 2.0.0-beta.4",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-10T19:44:54.672Z"
},
"descriptions": [
{
"lang": "en",
"value": "goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.4, goshs enforces the documented per-folder .goshs ACL/basic-auth mechanism for directory listings and file reads, but it does not enforce the same authorization checks for state-changing routes. An unauthenticated attacker can upload files with PUT, upload files with multipart POST /upload, create directories with ?mkdir, and delete files with ?delete inside a .goshs-protected directory. By deleting the .goshs file itself, the attacker can remove the folder's auth policy and then access previously protected content without credentials. This results in a critical authorization bypass affecting confidentiality, integrity, and availability. This vulnerability is fixed in 2.0.0-beta.4."
}
],
"source": {
"advisory": "GHSA-wvhv-qcqf-f3cx",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-13T20:52:58.640099Z",
"id": "CVE-2026-40189",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-04-13T20:53:02.400Z"
}
}
]
}
}