Description
A flaw was found in Netty's `netty-handler-ssl-ocsp` component. This vulnerability involves a time-of-check/time-of-use (TOCTOU) race condition within the OCSP stapling validator. A remote attacker could exploit this timing window, allowing them to use a certificate that has been revoked for authentication purposes. This could lead to unauthorized access or bypass of security controls.
Published: n/a
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wc96-39fc-566f Netty: TOCTOU in OcspServerCertificateValidator
History

Tue, 28 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in Netty's `netty-handler-ssl-ocsp` component. This vulnerability involves a time-of-check/time-of-use (TOCTOU) race condition within the OCSP stapling validator. A remote attacker could exploit this timing window, allowing them to use a certificate that has been revoked for authentication purposes. This could lead to unauthorized access or bypass of security controls.
Title io.netty/netty-handler-ssl-ocsp: Netty: Time-of-check/time-of-use in netty-handler-ssl-ocsp
Weaknesses CWE-367
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

threat_severity

Important


Subscriptions

No data.

cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-09T00:00:00Z

Links: CVE-2026-56822 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses