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CVE-2026-93493— Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field

Quick assessment

Affected
Red Hat Red Hat build of Apache Camel for Spring Boot 4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Netty 的 组件中发现了一个缺陷。远程攻击者可以通过提供一个省略了可选的 字段的在线证书状态协议（OCSP）响应来利用此漏洞。这种省略会导致 OCSP 校验被静默跳过，从而使应用程序在未经验证的证书上继续运行。这可能导致在预期进行证书校验的地方，安全防护机制被绕过。

CVSS 5.9 · Medium EPSS 0.15% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
Red Hat Red Hat build of Apache Camel for Spring Boot 4 any affected
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I. Basic Information for CVE-2026-93493

Vulnerability Information
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Vulnerability Title
Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书撤销验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Apache Camel for Spring Boot 4 - cpe:/a:redhat:camel_spring_boot:4

II. Public POCs for CVE-2026-93493

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III. Intelligence Information for CVE-2026-93493

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Vendor Advisories for CVE-2026-93493 (2)

Same Patch Batch · Red Hat · 2026-09-18 · 43 CVEs total

CVE-2026-75885 9.3 CRITICAL Openshift/console: openshift/console: unauthenticated ssrf and resource exhaustion via dev
CVE-2026-93569 8.2 HIGH Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :au
CVE-2026-91149 7.5 HIGH Cockpit: cockpit: denial of service via unbounded connection thread spawning
CVE-2026-93572 7.5 HIGH Io.netty/netty-codec-redis: netty: redisarrayaggregator nested resp headers multiply patch
CVE-2026-93575 7.5 HIGH Io.netty/netty-codec-mqtt: netty: resource exhaustion in mqttdecoder
CVE-2026-93563 7.5 HIGH Io.netty/netty-codec-smtp: netty: unbounded multi-line response accumulation in smtprespon
CVE-2026-87743 7.5 HIGH Quarkus-vertx-http: authorization bypass via path normalization discrepancy in quarkus htt
CVE-2026-93494 7.5 HIGH Io.netty/netty-codec-stomp: netty: bytebuf leak in stompsubframedecoder when a frame body
CVE-2026-89059 7.5 HIGH Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos)
CVE-2026-93488 7.5 HIGH Io.netty/netty-codec-http: netty: denial of service via unbounded concurrent spdy streams
CVE-2026-93565 7.5 HIGH Io.netty/netty-codec-http: netty rtspdecoder method-token smuggling via trailing control b
CVE-2026-93491 7.5 HIGH Io.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1
CVE-2026-93560 7.5 HIGH Io.netty/netty-codec-stomp: netty: stomp codec content-length long-to-int truncation cause
CVE-2026-93558 7.5 HIGH Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserver
CVE-2026-93568 7.5 HIGH Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended
CVE-2026-93576 7.5 HIGH Io.netty/netty-codec-smtp: netty netty-codec-smtp — smtp command-name field is not crlf-va
CVE-2026-93564 7.5 HIGH Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf refere
CVE-2026-93567 7.5 HIGH Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/
CVE-2026-89058 7.4 HIGH Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildc
CVE-2026-81627 6.7 MEDIUM Qemu-kvm: vapic writable rom alias can escape the option-rom window and expose locked smra

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat build of Apache Camel for Spring Boot 4
Same vendor: Red Hat
Same weakness: CWE-299

V. Comments for CVE-2026-93493

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