Starman CVE-2026-40560
HIGH
HTTP Request/Response Smuggling (CWE-444)
2026-04-29
9b29abf9-4ab0-4765-b253-1875cd9b441e
7.5
CVSS 3.1
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CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Lifecycle Timeline
3
CVSS changed
Apr 29, 2026 - 14:38 NVD
7.5 (HIGH)
Patch released
Apr 29, 2026 - 08:30 nvd
Patch available
CVE Published
Apr 29, 2026 - 00:16 nvd
HIGH 7.5
DescriptionNVD
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.
Analysis
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. …
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Vendor StatusVendor
Debian
starman
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 0.4015-1 | - |
| bookworm | vulnerable | 0.4016-1 | - |
| forky, sid, trixie | vulnerable | 0.4017-1 | - |
| (unstable) | fixed | (unfixed) | - |
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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