High
starman — security advisory
Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.
- Products
- starman
- Affected versions
- 0.4014-1, 0.4014-3, 0.4015-1, 0.4016-1, 0.4017-1, 0.4017-1build1, 0.4018-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-40560
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:43 UTC · Revision 1
Source evidence
Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.
osv:UBUNTU-CVE-2026-40560
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
starman
Fixed versions: Not specified
Complete source record
{
"id": "c6e3c9a131a8b829bb29f71f5b4fca08ba8154c6df30ff8849e8a7088ed153d4",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-40560",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-40560",
"summary": "Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman incorrectly prioritizes \"Content-Length\" over \"Transfer-Encoding: chunked\" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.",
"evidence": "osv:UBUNTU-CVE-2026-40560",
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],
"modified": "2026-10-17T12:58:52.872905958Z",
"provider": "osv",
"upstream": [
"CVE-2026-40560"
],
"references": [
"https://ubuntu.com/security/CVE-2026-40560",
"https://www.cve.org/CVERecord?id=CVE-2026-40560",
"https://lists.security.metacpan.org/cve-announce/msg/39426182/"
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 359132,
"published_at": "2026-04-29T00:16:00+00:00"
}