CVE-2026-93493
Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
- State
- Published
- Severity
- 5.9 Medium
- Published
- Sep 18, 2026
- Updated
- Sep 18, 2026
- Reserved
- Sep 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N | redhat |
Weaknesses
- CWE-299 Improper Check for Certificate Revocation
Affected Products
| Product | Versions |
|---|---|
Red Hat build of Apache Camel for Spring Boot 4Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-93493vdb-entry
- RHBZ#2536897issue-tracking
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