libweb-simple-perl — security advisory
Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters. Web::Dispatch::ParamParser::get_unpacked_body_from reads an application/x-www-form-urlencoded body using a single read call, with no cap and the return value ignored. Perl's read grows the buffer to the requested length before reading, so the declared Content-Length determines the allocation. An attacker can trigger this through any route whose dispatch specification has a % body-parameter match, such as sub (POST + %name=), sending a Content-Length far larger than the body actually sent. No authentication is involved.
- Products
- libweb-simple-perl
- Affected versions
- 0.033-2, 0.035-1
- Fixed versions
- 0.035-1
- CVEs
- CVE-2026-114629
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 18:47 UTC · Revision 1
Source evidence
Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters. Web::Dispatch::ParamParser::get_unpacked_body_from reads an application/x-www-form-urlencoded body using a single read call, with no cap and the return value ignored. Perl's read grows the buffer to the requested length before reading, so the declared Content-Length determines the allocation. An attacker can trigger this through any route whose dispatch specification has a % body-parameter match, such as sub (POST + %name=), sending a Content-Length far larger than the body actually sent. No authentication is involved.
osv:DEBIAN-CVE-2026-114629
libweb-simple-perl
Fixed versions: Not specified
libweb-simple-perl
Fixed versions: Not specified
libweb-simple-perl
Fixed versions: 0.035-1
Complete source record
{
"id": "d07efdf0ea65d4995dc633159b2bd01a2a600faf037969e33bce53b66d3d88ee",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-114629",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-114629",
"summary": "Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters. Web::Dispatch::ParamParser::get_unpacked_body_from reads an application/x-www-form-urlencoded body using a single read call, with no cap and the return value ignored. Perl's read grows the buffer to the requested length before reading, so the declared Content-Length determines the allocation. An attacker can trigger this through any route whose dispatch specification has a % body-parameter match, such as sub (POST + %name=), sending a Content-Length far larger than the body actually sent. No authentication is involved.",
"evidence": "osv:DEBIAN-CVE-2026-114629",
"products": [
{
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"evidence": "/affected/0/package/name"
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
}
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{
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"severity": "unknown",
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"ecosystem_specific": {
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"package": {
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"ecosystem": "Debian:13"
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"package": {
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},
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}
],
"modified": "2026-10-27T17:00:06.931413991Z",
"provider": "osv",
"upstream": [
"CVE-2026-114629"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-114629"
]
},
"related_cves": [
{
"value": "CVE-2026-114629",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 462895,
"published_at": "2026-10-24T14:16:39.187+00:00"
}