UnratedFix available
apache2 — security advisory
Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is "Off" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header, a different vulnerability than CAN-2002-1157.
- Products
- apache2
- Affected versions
- Not specified
- Fixed versions
- 2.0.43-1
- CVEs
- CVE-2002-0840
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:11 UTC · Revision 1
Source evidence
Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is "Off" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header, a different vulnerability than CAN-2002-1157.
osv:DEBIAN-CVE-2002-0840
apache2
Fixed versions: 2.0.43-1
apache2
Fixed versions: 2.0.43-1
apache2
Fixed versions: 2.0.43-1
Complete source record
{
"id": "6e1915aabd8efb86f89511878c6985a3dbd04ee486acb1acfefc47bfc384811a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2002-0840",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2002-0840",
"summary": "Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is \"Off\" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header, a different vulnerability than CAN-2002-1157.",
"evidence": "osv:DEBIAN-CVE-2002-0840",
"products": [
{
"name": {
"value": "apache2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.43-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.43-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.43-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2002-0840",
"aliases": [
"DEBIAN-CVE-2002-0840"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.43-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2002-0840.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.43-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2002-0840.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.43-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2002-0840.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-22T23:47:22.657117565Z",
"provider": "osv",
"upstream": [
"CVE-2002-0840"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2002-0840"
]
},
"related_cves": [
{
"value": "CVE-2002-0840",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410364,
"published_at": "2002-10-11T04:00:00+00:00"
}