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vuln-cve/data/2026/3xxx/CVE-2026-3784.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-3784",
"assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"state": "PUBLISHED",
"assignerShortName": "curl",
"dateReserved": "2026-03-08T05:09:52.279Z",
"datePublished": "2026-03-11T10:09:21.418Z",
"dateUpdated": "2026-09-15T06:02:54.443Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"shortName": "curl",
"dateUpdated": "2026-09-15T06:02:54.443Z"
},
"title": "wrong proxy connection reuse with credentials",
"descriptions": [
{
"lang": "en",
"value": "curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a\nserver, even if the new request uses different credentials for the HTTP proxy.\nThe proper behavior is to create or use a separate connection."
}
],
"affected": [
{
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"product": "curl",
"versions": [
{
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"status": "affected",
"versionType": "semver",
"lessThan": "8.14.2"
},
{
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"status": "affected",
"versionType": "semver",
"lessThan": "8.16.1"
},
{
"version": "8.17.0",
"status": "affected",
"versionType": "semver",
"lessThan": "8.19.0"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "curl",
"product": "curl",
"versions": [
{
"version": "a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4",
"status": "affected",
"versionType": "git",
"lessThan": "5f13a7645e565c5c1a06f3ef86e97afb856fb364"
}
],
"defaultStatus": "unaffected",
"repo": "https://github.com/curl/curl.git"
},
{
"vendor": "curl",
"product": "curl",
"versions": [
{
"version": "8.18.0",
"status": "affected"
},
{
"version": "8.17.0",
"status": "affected"
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{
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"status": "affected"
},
{
"version": "8.15.0",
"status": "affected"
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{
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{
"version": "8.14.0",
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{
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},
{
"version": "8.12.1",
"status": "affected"
},
{
"version": "8.12.0",
"status": "affected"
},
{
"version": "8.11.1",
"status": "affected"
},
{
"version": "8.11.0",
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{
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{
"version": "8.10.0",
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{
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{
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{
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{
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}
],
"defaultStatus": "unaffected"
}
],
"references": [
{
"url": "https://curl.se/docs/CVE-2026-3784.json"
},
{
"url": "https://curl.se/docs/CVE-2026-3784.html"
},
{
"url": "https://hackerone.com/reports/3584903"
}
],
"x_osv": {
"schema_version": "1.5.0",
"id": "CURL-CVE-2026-3784",
"aliases": [
"CVE-2026-3784"
],
"summary": "wrong proxy connection reuse with credentials",
"modified": "2026-09-07T10:34:51.00Z",
"database_specific": {
"package": "curl",
"affects": "both",
"URL": "https://curl.se/docs/CVE-2026-3784.json",
"www": "https://curl.se/docs/CVE-2026-3784.html",
"issue": "https://hackerone.com/reports/3584903",
"CWE": {
"id": "CWE-305",
"desc": "Authentication Bypass by Primary Weakness"
},
"last_affected": "8.18.0",
"severity": "Low"
},
"published": "2026-03-11T08:00:00.00Z",
"affected": [
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "7.7.0"
},
{
"fixed": "8.14.2"
},
{
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},
{
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},
{
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},
{
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}
]
},
{
"type": "GIT",
"repo": "https://github.com/curl/curl.git",
"events": [
{
"introduced": "a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4"
},
{
"fixed": "5f13a7645e565c5c1a06f3ef86e97afb856fb364"
}
]
}
],
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}
],
"credits": [
{
"name": "Muhamad Arga Reksapati (HackerOne: nobcoder)",
"type": "finder"
},
{
"name": "Stefan Eissing",
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