curl — security advisory
When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.
- Products
- curl
- Affected versions
- Not specified
- Fixed versions
- 7.79.1-1
- CVEs
- CVE-2021-22923
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 16:49 UTC · Revision 1
Source evidence
When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.
osv:DEBIAN-CVE-2021-22923
curl
Fixed versions: 7.79.1-1
curl
Fixed versions: 7.79.1-1
curl
Fixed versions: 7.79.1-1
Complete source record
{
"id": "5d3322751ccc92452dbde8c1f29e21f0855a3275c5e75edeefecc2e5fdfd4eda",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-22923",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-22923",
"summary": "When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.",
"evidence": "osv:DEBIAN-CVE-2021-22923",
"products": [
{
"name": {
"value": "curl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.79.1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "curl",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.79.1-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "curl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.79.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2021-22923",
"aliases": [
"DEBIAN-CVE-2021-22923"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.79.1-1"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/debian/curl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.79.1-1"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/debian/curl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.79.1-1"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/debian/curl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-22923.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-15T09:47:41.078460287Z",
"provider": "osv",
"upstream": [
"CVE-2021-22923"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-22923"
]
},
"related_cves": [
{
"value": "CVE-2021-22923",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 328321,
"published_at": "2021-08-05T21:15:11.293+00:00"
}