CVE-2026-115823

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-55613 uhttpd is a small HTTP server. CWE-444
• CVE-2026-55614 uhttpd is a small HTTP server. CWE-444
• CVE-2026-55612 uhttpd is a small HTTP server. CWE-444
• CVE-2026-116127 Starlet versions before 0.33 for Perl send a body in responses to HEAD requests… CWE-444
• CVE-2026-91920 A flaw was found in the ChunkReader component of the Undertow web server, which is used… CWE-444
• CVE-2026-118264 Echo is a Go web framework. CWE-444
• CVE-2026-103995 Response body and chunk parsing would handle non-hex or negative integers incorrectly… CWE-444
• CVE-2026-115877 Twisted is an event-based framework for internet applications, supporting Python 3.6+. CWE-444