{"id":"CVE-2026-102479","revision":null,"records":[{"revision":"e996aab2c65541bca86c636b755bad36","observedAt":"2026-10-28T22:55:13.476+00:00","statement":{"source":"cve-program","id":"CVE-2026-102479","aliases":[],"title":"In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP/1.x decoder uses a canonicalization for well known HTTP headers, the canonicalization process interprets well crafted headers as headers of this l…","description":"In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP/1.x decoder uses a canonicalization for well known HTTP headers, the canonicalization process interprets well crafted headers as headers of this list, allowing for instance Content-Xength to be interpeted as Content-Length.\n\n\n\nThis can be exploited for request smuggling purpose.\n\n\n\nThe impacted component is io.vertx:vertx-core.","state":0,"publishedAt":"2026-10-14T18:43:54.623+00:00","modifiedAt":"2026-10-28T21:06:12.367+00:00","affected":[{"ecosystem":"Vendor product","name":"Eclipse Vert.x","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Eclipse Foundation\",\n                    \"product\": \"Eclipse Vert.x\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0\",\n                            \"lessThanOrEqual\": \"5.0.12\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.1.0\",\n                            \"lessThanOrEqual\": \"5.1.9\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.2.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-ch7p-g5pm-3gqx","https://gitlab.eclipse.org/security/cve-assignment/-/work_items/352"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102479","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102479","identifiers":["CVE-2026-102479"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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