{"id":"CVE-2026-93493","title":"A flaw was found in Netty's `netty-handler-ssl-ocsp` component","summary":"A flaw was found in Netty's `netty-handler-ssl-ocsp` component. A remote attacker can exploit this vulnerability by providing an Online Certificate Status Protocol (OCSP) response that omits the optional `nextUpdate` field. This omission…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-299"],"vendor":"Red Hat","product":"netty-handler-ssl-ocsp","affected":["netty-handler-ssl-ocsp (all versions)"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:06:08.407","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93493","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-93493","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536897","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93493.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93493"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93493"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00218,"epssPercentile":0.12544,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T14:37:05.277603Z"},"ingestedAt":"2026-09-18T08:38:04.107Z","slug":"CVE-2026-93493","body":"## Overview\n\nA flaw was found in Netty's `netty-handler-ssl-ocsp` component. A remote attacker can exploit this vulnerability by providing an Online Certificate Status Protocol (OCSP) response that omits the optional `nextUpdate` field. This omission causes the OCSP validation to be silently skipped, leading to applications proceeding with an unvalidated certificate. This can result in a bypass of security controls where certificate validation is expected.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat build of Apache Camel for Spring Boot 4 · no fix planned: Red Hat build of Apache Camel for Spring Boot 4 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93493.json)","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206717,"id":"CVE-2026-93493","ts":1789731638409,"field":"cvss","old":null,"new":"5.9"},{"seq":206716,"id":"CVE-2026-93493","ts":1789731638409,"field":"severity","old":"none","new":"medium"}]}