CVE-2026-93493

MEDIUM CVSS 3.1: 5.9 EPSS 0.15%
Updated Sep 18, 2026
Red Hat
Parameter Value
CVSS 5.9 (MEDIUM)
Type CWE-299
Vendor Red Hat
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products

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