{"api_version":"1","generated_at":"2026-10-26T16:11:54+00:00","cve":"CVE-2026-115823","urls":{"html":"https://cve.report/CVE-2026-115823","api":"https://cve.report/api/cve/CVE-2026-115823.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-115823","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115823"},"summary":{"title":"Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections","description":"Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections.\n\nFor 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.\n\nOn 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.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-10-25 17:17:01","updated_at":"2026-10-25 17:17:01"},"problem_types":["CWE-444","CWE-444 CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"],"metrics":[],"references":[{"url":"https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes","name":"https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/miyagawa/Starman/commit/91c47c529cd1e100f938486896ea9083ec3ec7bf.patch","name":"https://github.com/miyagawa/Starman/commit/91c47c529cd1e100f938486896ea9083ec3ec7bf.patch","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-115823","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115823","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"Upgrade to Starman 0.4019 or later.","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"For deployments that cannot upgrade to 0.4019, enable Plack::Middleware::Head, which removes the body from HEAD responses.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","modules":["Starman"],"packageName":"Starman","packageURL":"pkg:cpan/Starman","programFiles":["lib/Starman/Server.pm"],"programRoutines":[{"name":"Starman::Server::_finalize_response"}],"repo":"https://github.com/miyagawa/Starman","versions":[{"lessThan":"0.4019","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections.\n\nFor 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.\n\nOn 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."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-25T16:51:19.961Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"references":[{"tags":["patch"],"url":"https://github.com/miyagawa/Starman/commit/91c47c529cd1e100f938486896ea9083ec3ec7bf.patch"},{"tags":["release-notes"],"url":"https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes"}],"solutions":[{"lang":"en","value":"Upgrade to Starman 0.4019 or later."}],"source":{"discovery":"UNKNOWN"},"title":"Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections","workarounds":[{"lang":"en","value":"For deployments that cannot upgrade to 0.4019, enable Plack::Middleware::Head, which removes the body from HEAD responses."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-115823","datePublished":"2026-10-25T16:51:19.961Z","dateReserved":"2026-10-23T16:47:20.192Z","dateUpdated":"2026-10-25T16:51:19.961Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-25 17:17:01","lastModifiedDate":"2026-10-25 17:17:01","problem_types":["CWE-444","CWE-444 CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"115823","Ordinal":"1","Title":"Starman versions before 0.4019 for Perl send response bodies for","CVE":"CVE-2026-115823","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"115823","Ordinal":"1","NoteData":"Starman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connections.\n\nFor 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.\n\nOn 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.","Type":"Description","Title":"Starman versions before 0.4019 for Perl send response bodies for"}]}}}