---
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: 0.00282
epssPercentile: 0.18369
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T14:37:05.277603Z'
ingestedAt: '2026-09-18T08:38:04.107Z'
---

## Overview

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

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **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)