CVE-2026-93493

Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field

Published Sep 18, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
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 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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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Advisories

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History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Redhat build Of Apache Camel For Spring Boot
Vendors & Products Redhat build Of Apache Camel For Spring Boot
Type Values Removed Values Added
Title Netty: netty-handler-ssl-ocsp: io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Type Values Removed Values Added
Description 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 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.
Title Netty: netty-handler-ssl-ocsp: io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
First Time appeared Redhat
Redhat camel Spring Boot
Weaknesses CWE-299
CPEs cpe:/a:redhat:camel_spring_boot:4
Vendors & Products Redhat
Redhat camel Spring Boot
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Sep 18, 2026, 2:41 PM
Reserved
Sep 18, 2026, 7:17 AM
Status
Awaiting Analysis
Published
Sep 18, 2026, 8:17 AM
Modified
Sep 18, 2026, 7:06 PM
Severity
Moderate
Public date
Sep 10, 2026, 12:41 AM