CVE-2026-40560

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{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Starman", "product": "Starman", "programFiles": ["lib/Starman/Server.pm"], "programRoutines": [{"name": "Starman::Server::_prepare_env"}], "repo": "https://github.com/miyagawa/Starman", "vendor": "MIYAGAWA", "versions": [{"lessThan": "0.4018", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:miyagawa:starman:*:*:*:*:*:perl:*:*", "matchCriteriaId": "0EF9D50C-F89F-432C-BD1D-E3D17A062046", "versionEndExcluding": "0.4018", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence.\n\nStarman incorrectly prioritizes \"Content-Length\" over \"Transfer-Encoding: chunked\" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence.\n\nAn attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy."}, {"lang": "es", "value": "Versiones de Starman anteriores a la 0.4018 para Perl permiten el Contrabando de Solicitudes HTTP a trav\u00e9s de una Precedencia Indebida de Encabezados.\n\nStarman prioriza incorrectamente 'Content-Length' sobre 'Transfer-Encoding: chunked' cuando ambos encabezados est\u00e1n presentes en una solicitud HTTP. Seg\u00fan RFC 7230 3.3.3, Transfer-Encoding debe tener precedencia.\n\nUn atacante podr\u00eda explotar esto para contrabandear solicitudes HTTP maliciosas a trav\u00e9s de un proxy inverso frontal."}], "id": "CVE-2026-40560", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40560", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-29T13:30:17.148319Z", "version": "2.0.3"}}]}, "published": "2026-04-29T00:16:03.927", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Third Party Advisory"], "url": "https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.3"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/miyagawa/Starman/commit/ced205f0805027e9d9c0731f8c40b104220604ed.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Product", "Release Notes"], "url": "https://metacpan.org/release/MIYAGAWA/Starman-0.4018/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/04/29/1"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-444"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.4018)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Starman", "source": "cna", "vendor": "MIYAGAWA"}, "product": "starman", "vendor": "miyagawa"}], "created": "2026-04-29T02:15:47.403686+00:00", "updated": "2026-04-29T21:45:20.726185+00:00", "vendors": ["miyagawa", "miyagawa$PRODUCT$starman"]}