EUVD-2026-82770
GHSA-9rhx-p462-pg2j
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Network-reachable and unauthenticated (PR:N), but AC:H because the attacker must control the OCSP response and rely on the OCSP module; integrity-only (I:H) since an invalid certificate is accepted.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
5DescriptionCVE.org
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.
AnalysisAI
Certificate revocation validation performed by Netty's optional netty-handler-ssl-ocsp module can be silently skipped when the OCSP response omits the optional nextUpdate field, causing the application to proceed with a certificate that should have been rejected. The flaw is remote and requires no credentials or user interaction (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N, 5.9), but exploitation is conditional: the deployment must actually use the opt-in OCSP-stapling component, and the attacker must control or intercept the OCSP response seen by the client, typically through a man-in-the-middle position or by operating the TLS server whose certificate is being validated. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application uses Netty's optional netty-handler-ssl-ocsp component to perform OCSP-based certificate revocation validation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but conditional security-control bypass, not a high-CVSS-but-trivial-risk inflation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch or fixed version is identified in the available advisory data at time of analysis, so remediation should begin with compensating controls while tracking the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-93493 and the Bugzilla record at https://bugzilla.redhat.com/show_bug.cgi?id=2536897 for the patched Netty release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Oracle Java SE 7 Update 6 and earlier contains multiple sandbox bypass vulnerabilities via the ClassFinder and forName m
Remote code execution in IBM Sterling B2B Integrator, Sterling Integrator, and Tivoli Common Reporting allows unauthenti
Java Runtime Environment sandbox bypass via incorrect image channel verification in 2D component allows remote unauthent
Oracle Java SE JDK/JRE 7 and 6 Update 27 and earlier allows remote code execution with complete system compromise throug
JBoss Seam 2 in Red Hat JBoss EAP 4.3.0 fails to sanitize JBoss Expression Language inputs, allowing remote attackers to
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 update 4 and earlier, 6 up
Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Up
The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 7 and earlier allow
Remote unauthenticated attackers can execute arbitrary code on Adobe ColdFusion servers through Java deserialization fla
The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during
Same weakness CWE-299 – Improper Check for Certificate Revocation
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today