Improper input validation in Oracle Java SE and Oracle GraalVM for JDK - CVE-2026-91394

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Main Vulnerability Database Vulnerabilities #VU163800

Improper input validation in Oracle Java SE and Oracle GraalVM for JDK - CVE-2026-91394

Published: November 10, 2026


Vulnerability identifier: #VU163800
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91394
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The vulnerability exists due to improper input validation within the Networking component in Oracle Java SE, Oracle GraalVM for JDK. A remote non-authenticated attacker can exploit this vulnerability to gain access to sensitive information.


Affected software

Oracle Java SE
Oracle GraalVM for JDK

How to mitigate CVE-2026-91394

Install updates from vendor's website.


External References

Related Security Bulletins