{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40562","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","state":"PUBLISHED","assignerShortName":"CPANSec","dateReserved":"2026-04-14T11:35:53.644Z","datePublished":"2026-05-06T12:36:34.715Z","dateUpdated":"2026-05-07T16:13:49.501Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Gazelle","product":"Gazelle","programFiles":["lib/Plack/Handler/Gazelle.pm","lib/Plack/Handler/Gazelle.xs"],"programRoutines":[{"name":"Plack::Handler::Gazelle::run"},{"name":"lib/Plack/Handler/Gazelle.xs::_parse_http_request"}],"repo":"https://github.com/kazeburo/Gazelle","vendor":"KAZEBURO","versions":[{"lessThanOrEqual":"0.49","status":"affected","version":"0","versionType":"custom"}]}],"credits":[{"lang":"en","type":"finder","value":"CPANSec"}],"descriptions":[{"lang":"en","value":"Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence.\n\nGazelle 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."}],"impacts":[{"capecId":"CAPEC-33","descriptions":[{"lang":"en","value":"CAPEC-33 HTTP Request Smuggling"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec","dateUpdated":"2026-05-07T16:13:49.501Z"},"references":[{"url":"https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.3"},{"tags":["patch"],"url":"https://security.metacpan.org/patches/G/Gazelle/0.49/CVE-2026-40562-r1.patch"},{"tags":["release-notes"],"url":"https://metacpan.org/release/KAZEBURO/Gazelle-0.50/changes"}],"solutions":[{"lang":"en","value":"Upgrade to Gazelle 0.50 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-04-12T00:00:00.000Z","value":"Issue identified by CPANSec"},{"lang":"en","time":"2026-04-29T00:00:00.000Z","value":"Issue reported to software maintainer"},{"lang":"en","time":"2026-05-06T00:00:00.000Z","value":"Issue disclosed by CPANSec"},{"lang":"en","time":"2026-05-07T00:00:00.000Z","value":"Gazelle 0.50 released"}],"title":"Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence","workarounds":[{"lang":"en","value":"Migrate to Starman version 0.4018 or newer which has fixed the issue.  Or apply the patch."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-06T14:14:25.637199Z","id":"CVE-2026-40562","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-06T14:15:32.815Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/06/7"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-05-06T16:32:45.619Z"}}]}}