CVE-2026-87286 Auth bypass in Oracle GraalVM
Unauthenticated attackers can compromise Oracle GraalVM via HTTP, leading to full system takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87286?
CVE-2026-87286 is a high-severity authentication bypass vulnerability in Oracle GraalVM, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the Oracle GraalVM product of Oracle Java SE (component: Compiler). The supported version that is affected is Oracle GraalVM: 25.0.4.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle GraalVM. Successful attacks of this vulnerability can result in takeover of Oracle GraalVM. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-284
Which versions are affected by CVE-2026-87286?
How do I fix CVE-2026-87286?
No fix has been published for CVE-2026-87286 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-87286 being exploited?
There is no known exploitation of CVE-2026-87286 in the wild and no public exploit code.
Sources
Also known as GHSA-5wxj-gcfc-wc2r.