HighFix available
trafficserver — security advisory
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.0.1.
- Products
- trafficserver
- Affected versions
- Not specified
- Fixed versions
- 9.1.1+ds-1
- CVEs
- CVE-2021-37148
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 02:01 UTC · Revision 1
Source evidence
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.0.1.
osv:DEBIAN-CVE-2021-37148
trafficserver
Fixed versions: 9.1.1+ds-1
Complete source record
{
"id": "7e4fbb45f2b6582d586803464b31e9744d32e3f8499c28c602543d30141c8802",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-37148",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-37148",
"summary": "Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.0.1.",
"evidence": "osv:DEBIAN-CVE-2021-37148",
"products": [
{
"name": {
"value": "trafficserver",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "9.1.1+ds-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2021-37148",
"aliases": [
"DEBIAN-CVE-2021-37148"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.1.1+ds-1"
}
]
}
],
"package": {
"name": "trafficserver",
"purl": "pkg:deb/debian/trafficserver?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-37148.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:05:22.814409240Z",
"provider": "osv",
"upstream": [
"CVE-2021-37148"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-37148"
]
},
"related_cves": [
{
"value": "CVE-2021-37148",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424342,
"published_at": "2021-11-03T16:15:08.043+00:00"
}