CVE-2026-75840 ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped Regex
Attackers with trigger creation privileges can read arbitrary files on the host system via a sandbox bypass in ArcadeDB.
- 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-2026-75840?
CVE-2026-75840 is a high-severity path traversal vulnerability in ArcadeData arcadedb, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ArcadeDB before 26.8.1 contains an arbitrary file read vulnerability in the GraalVM JavaScript sandbox allowlist enforcement, which uses unescaped regular expressions to validate package names. Attackers with trigger creation privileges can use Java.type() to access java.util.zip.ZipFile or java.util.jar.JarFile classes and read arbitrary files on the host system as the ArcadeDB server process.
Weakness: CWE-1025
Which versions are affected by CVE-2026-75840?
How do I fix CVE-2026-75840?
No fix has been published for CVE-2026-75840 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-2026-75840 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75840 exists.
Sources
Also known as GHSA-g47p-8vrx-p85q, GHSA-wx28-2265-f788.