Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MIYAGAWA | Starman | < 0.4018 | 0.4018 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | starman | 0.4018-1 | — |
| Debian 13 | starman | 0.4018-0+deb13u1 | — |
| Debian 12 | starman | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | starman | No fix yet | — |
| Ubuntu 26.04 LTS | starman | No fix yet | — |
| Ubuntu 25.10 | starman | No fix yet | — |
| Ubuntu 24.04 LTS | starman | No fix yet | — |
| Ubuntu 22.04 LTS | starman | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | starman | No fix yet | — |
| Ubuntu 18.04 LTS | starman | No fix yet | — |
| Ubuntu 16.04 LTS | starman | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | perl-Starman | 0.4018-1.1 | openSUSE-SU-2026:10757-1 |
Advisories 1
- openSUSE-SU-2026:10757-1 perl-Starman-0.4018-1.1 on GA media SUSE / openSUSE Security Updates · May 13, 2026