CPANSA-Starman-2026-115823: Starman vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-25T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-25T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 9.1 | Severity | |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections.
For a HEAD request Starman omits chunked framing but still writes the body returned by the application, on both the array and streaming response paths. Responses with a 1xx, 204 or 304 status also carry the body.
On a keep-alive or pipelined connection the client reads those bytes as the start of the next response. A front-end proxy that reuses upstream connections may then pair responses with the wrong requests.
Vulnerabilities
CVE-2026-115823
Vulnerability DescriptionStarman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections.
For a HEAD request Starman omits chunked framing but still writes the body returned by the application, on both the array and streaming response paths. Responses with a 1xx, 204 or 304 status also carry the body.
On a keep-alive or pipelined connection the client reads those bytes as the start of the next response. A front-end proxy that reuses upstream connections may then pair responses with the wrong requests.
| Weakness | CWE-444 : Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Starman less than 0.4019 |
|
Fixed
- Starman greater than or equal 0.4019
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Starman-2026-115823 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-starman-2026-115823.json - https://github.com/miyagawa/Starman/commit/91c47c529cd1e100f938486896ea9083ec3ec7bf.patch external
https://github.com/miyagawa/Starman/commit/91c47c529cd1e100f938486896ea9083ec3ec7bf.patch - https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes external
https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes - CVE-2026-115823 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-115823
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Sun Oct 25 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/