UnratedFix available
curl: Fix of 3 CVEs
Type: advisorySources: OSV
- CVE-2026-1965: fix incorrect connection reuse; prevent reuse of Negotiate- authenticated connections with different credentials and require authentication identity match - CVE-2026-3784: fix wrong proxy connection reuse with different credentials; check proxy user/password in proxy_info_matches to prevent reuse of HTTP proxy CONNECT connections when credentials differ - CVE-2026-3783: prevent bearer token leak on HTTP(S) redirect when .netrc contains entries for the redirected host
- Products
- curl, curl-minimal, libcurl, libcurl-devel, libcurl-minimal
- Affected versions
- Not specified
- Fixed versions
- 7.61.1-22.el8.tuxcare.els18
- CVEs
- CVE-2026-1965, CVE-2026-3783, CVE-2026-3784
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:55 UTC · Revision 1
Source evidence
- CVE-2026-1965: fix incorrect connection reuse; prevent reuse of Negotiate- authenticated connections with different credentials and require authentication identity match - CVE-2026-3784: fix wrong proxy connection reuse with different credentials; check proxy user/password in proxy_info_matches to prevent reuse of HTTP proxy CONNECT connections when credentials differ - CVE-2026-3783: prevent bearer token leak on HTTP(S) redirect when .netrc contains entries for the redirected host
osv:CLSA-2026-1774259220
curl
Fixed versions: 7.61.1-22.el8.tuxcare.els18
curl-minimal
Fixed versions: 7.61.1-22.el8.tuxcare.els18
libcurl
Fixed versions: 7.61.1-22.el8.tuxcare.els18
libcurl-devel
Fixed versions: 7.61.1-22.el8.tuxcare.els18
libcurl-minimal
Fixed versions: 7.61.1-22.el8.tuxcare.els18
Complete source record
{
"id": "eebcf1d3ff068b9104cdfddf433092dfe9a835e3f2a17440f567a3ee3ae12e5f",
"url": "https://osv.dev/vulnerability/CLSA-2026-1774259220",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "curl: Fix of 3 CVEs",
"summary": "- CVE-2026-1965: fix incorrect connection reuse; prevent reuse of Negotiate- authenticated connections with different credentials and require authentication identity match - CVE-2026-3784: fix wrong proxy connection reuse with different credentials; check proxy user/password in proxy_info_matches to prevent reuse of HTTP proxy CONNECT connections when credentials differ - CVE-2026-3783: prevent bearer token leak on HTTP(S) redirect when .netrc contains entries for the redirected host",
"evidence": "osv:CLSA-2026-1774259220",
"products": [
{
"name": {
"value": "curl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.61.1-22.el8.tuxcare.els18",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "curl-minimal",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.61.1-22.el8.tuxcare.els18",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.61.1-22.el8.tuxcare.els18",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl-devel",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.61.1-22.el8.tuxcare.els18",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl-minimal",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.61.1-22.el8.tuxcare.els18",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1774259220",
"aliases": [
"CLSA-2026-1774259220"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.61.1-22.el8.tuxcare.els18"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:rpm/tuxcare/curl?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1774259220.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.61.1-22.el8.tuxcare.els18"
}
]
}
],
"package": {
"name": "curl-minimal",
"purl": "pkg:rpm/tuxcare/curl-minimal?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1774259220.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.61.1-22.el8.tuxcare.els18"
}
]
}
],
"package": {
"name": "libcurl",
"purl": "pkg:rpm/tuxcare/libcurl?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1774259220.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.61.1-22.el8.tuxcare.els18"
}
]
}
],
"package": {
"name": "libcurl-devel",
"purl": "pkg:rpm/tuxcare/libcurl-devel?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1774259220.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.61.1-22.el8.tuxcare.els18"
}
]
}
],
"package": {
"name": "libcurl-minimal",
"purl": "pkg:rpm/tuxcare/libcurl-minimal?distro=centos-8.4",
"ecosystem": "TuxCare:CentOS:8.4"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1774259220.json"
}
}
],
"modified": "2026-10-21T10:47:58.456563304Z",
"provider": "osv",
"upstream": [
"CVE-2026-1965",
"CVE-2026-3783",
"CVE-2026-3784"
],
"references": [
"https://errata.tuxcare.com/els_os/centos8.4els/CLSA-2026-1774259220.html"
]
},
"related_cves": [
{
"value": "CVE-2026-1965",
"evidence": "/upstream"
},
{
"value": "CVE-2026-3783",
"evidence": "/upstream"
},
{
"value": "CVE-2026-3784",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 392478,
"published_at": "2026-03-23T09:47:04+00:00"
}