Vulnerability Description
Starlet versions before 0.33 for Perl send a body in responses to HEAD requests, corrupting the next response on a persistent or pipelined connection. The request method is not passed to the response writer, so whatever body the application returns for a HEAD request is sent. With Plack::Middleware::Head the body is empty, but an HTTP/1.1 response without a Content-Length header still gets the chunked encoding terminator. Responses with status 204 or 304 are also sent with their body. Pipelined GET and HEAD requests keep the connection open even when keep-alive is disabled, which is the default. A client or proxy reading the connection takes the extra bytes as the start of the next response, which may desynchronize a proxy that shares the connection across clients.
Related Weaknesses (CWE)
References
- https://github.com/kazuho/Starlet/commit/859e0c9572cdbed4bb45706d3957b3c025dc0ed
- https://metacpan.org/release/KAZUHO/Starlet-0.33/changes
FAQ
What is CVE-2026-116127?
CVE-2026-116127 is a documented vulnerability. Starlet versions before 0.33 for Perl send a body in responses to HEAD requests, corrupting the next response on a persistent or pipelined connection. The request method is not passed to the response...
How severe is CVE-2026-116127?
CVSS scoring is not yet available for CVE-2026-116127. Check NVD for updates.
Is there a patch for CVE-2026-116127?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.