starman: Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-ali...
CVE-2026-115823 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-115823, released October 30, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| perl-Starman · Fedora 43 | 0.4019-1.fc43 | FEDORA-2026-A2DF1DFB37 | Nov 7, 2026 |
| starman · Debian 14 | 0.4019-1 | DEBIAN-CVE-2026-115823 | Oct 30, 2026 |
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