CVE-2026-91415 Oracle Java SE - Denial of Service & Data Integrity & Confidentiality

Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition (affected versions: Java SE 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; GraalVM for JDK 17.0.20.1, 21.0.12.1; GraalVM Enterprise Edition 21.3.19.1.1) contain a denial of service and data integrity and confidentiality vulnerability caused by improper handling in 2D component APIs, letting unauthenticated network attackers cause crashes and unauthorized read/write access, exploit requires network access with high attack complexity.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service, Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest available version beyond 8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27, or corresponding GraalVM versions.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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