MediumFix available
lighttpd — security advisory
In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.
- Products
- lighttpd
- Affected versions
- Not specified
- Fixed versions
- 1.4.64-r0
- CVEs
- CVE-2022-22707
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:10 UTC · Revision 1
Source evidence
In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.
osv:ALPINE-CVE-2022-22707
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
lighttpd
Fixed versions: 1.4.64-r0
Complete source record
{
"id": "d9a7bf9549cfa1db43e8962e2fb778150c5f49cc43b777d91301df020749d7c2",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2022-22707",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2022-22707",
"summary": "In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.",
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"severity": "medium",
"structured": {
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"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
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],
"modified": "2026-10-15T07:17:54.160675272Z",
"provider": "osv",
"upstream": [
"CVE-2022-22707"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-22707"
]
},
"related_cves": [
{
"value": "CVE-2022-22707",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 321679,
"published_at": "2022-01-06T06:15:07.243+00:00"
}