Medium severity · published Sep 18, 2026
CVE-2026-93493
Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
5.9
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat build of Apache Camel for Spring Boot 4 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat build of Apache Camel for Spring Boot 4
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93493
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-93493
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-93493
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2536897
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