{"id":"EM-20261105-CG1U","url":"https://cyber.eventmonitor.net/incident/EM-20261105-CG1U/apache-sling-engine-vulnerability-cve-2026-103866/","type":"cve","title":"Apache Sling Engine Vulnerability (CVE-2026-103866)","subtitle":"CVE-2026-103866","subject":"CVE-2026-103866","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-05T13:17:07.143Z","firstSignal":"2026-11-05T12:33:00.000Z","lastSignal":"2026-11-05T13:17:07.143Z","updated":"2026-11-10T17:07:51.996Z","revision":1,"life":[{"status":"Born","at":"2026-11-05T13:17:07.143Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-05T13:17:07.143Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T12:33:00.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-05T13:17:07.143Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261105-CG1U created."},{"at":"2026-11-05T13:17:07.143Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-05T13:17:07.143Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T13:17:07.143Z","detail":"CVSS 7.5 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T12:33:00.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T12:33:00.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":1,"title":"Red Hat: CVE-2026-103866 (low)","text":"org.apache.sling/org.apache.sling.engine: Apache Sling Engine: HTTP request smuggling via malformed query and form parsing","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-103866.json"},{"at":"2026-11-05T13:17:07.143Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-103866 (CVSS 7.5)","text":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Apache Sling Engine. The engine's query/form parser accepts non-standard percent-escapes, wrong charsets, and continues request processing on such errors.\n\n\n\nThis issue affects Apache Sling Engine: before 3.0.4.\n\n\n\nUsers are recommended to upgrade to version 3.0.4, which fixes the issue.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103866"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T13:17:07.143","score":7.5,"severity":"HIGH","desc":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Apache Sling Engine. The engine's query/form parser accepts non-standard percent-escapes, wrong charsets, and continues request processing on such errors.\n\n\n\nThis issue affects Apache Sling Engine…","product":"","seen":1794330471996},"kev":null,"epss":{"epss":0.00212,"pct":0.11618,"at":1794330471996},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}