CriticalFix available
rust-hyper — security advisory
An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.
- Products
- rust-hyper
- Affected versions
- Not specified
- Fixed versions
- 0.12.35-1
- CVEs
- CVE-2020-35863
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:14 UTC · Revision 1
Source evidence
An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.
osv:DEBIAN-CVE-2020-35863
rust-hyper
Fixed versions: 0.12.35-1
rust-hyper
Fixed versions: 0.12.35-1
rust-hyper
Fixed versions: 0.12.35-1
Complete source record
{
"id": "80003764be768acbcb91107c1db1c9de1ea10f19a3fdde9ac6af17edebb3dd47",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-35863",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-35863",
"summary": "An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.",
"evidence": "osv:DEBIAN-CVE-2020-35863",
"products": [
{
"name": {
"value": "rust-hyper",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.12.35-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rust-hyper",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
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"fixed_versions": [
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],
"affected_versions": []
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2020-35863",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
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"type": "ECOSYSTEM",
"events": [
{
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{
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],
"package": {
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"purl": "pkg:deb/debian/rust-hyper?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35863.json"
},
"ecosystem_specific": {
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{
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],
"package": {
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"purl": "pkg:deb/debian/rust-hyper?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35863.json"
},
"ecosystem_specific": {
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},
{
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{
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{
"fixed": "0.12.35-1"
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],
"package": {
"name": "rust-hyper",
"purl": "pkg:deb/debian/rust-hyper?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35863.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:00.804397581Z",
"provider": "osv",
"upstream": [
"CVE-2020-35863"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-35863"
]
},
"related_cves": [
{
"value": "CVE-2020-35863",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 451957,
"published_at": "2020-12-31T10:15:15.097+00:00"
}