CVE-2026-83357 Path traversal in Oracle GraalVM for JDK, Oracle GraalVM
An unauthenticated attacker can exploit a path traversal flaw in Oracle GraalVM to achieve full system takeover via network access.
- 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-2026-83357?
CVE-2026-83357 is a high-severity path traversal vulnerability in Oracle GraalVM for JDK, 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 for JDK, Oracle GraalVM product of Oracle Java SE (component: Compiler). The supported version that is affected is Oracle GraalVM for JDK 17: 23.0.13.1; Oracle GraalVM for JDK 21: 23.1.12.1; Oracle GraalVM: 25.0.4.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle GraalVM for JDK, Oracle GraalVM. Successful attacks of this vulnerability can result in takeover of Oracle GraalVM for JDK, 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-22
Which versions are affected by CVE-2026-83357?
How do I fix CVE-2026-83357?
No fix has been published for CVE-2026-83357 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-83357 being exploited?
There is no known exploitation of CVE-2026-83357 in the wild and no public exploit code.
Sources
Also known as GHSA-hc58-mhwq-g2rf, UBUNTU-CVE-2026-83357.