CVE-2026-75840Public exploitNetwork attack vector

Arbitrary file read via regex allowlist bypass

Published Aug 18, 2026 · Updated Aug 18, 2026

Arbitrary file read in ArcadeDB before 26.8.1 allows remote authenticated users to read host files via crafted JavaScript triggers. The GraalPolyglotEngine host-class check passes allowlist entries such as java.util.* to String.matches(), so unescaped dots and wildcards are evaluated as regular-expression metacharacters instead of literal package names. An identity that can create triggers can therefore reach java.util.zip.ZipFile or java.util.jar.JarFile through Java.type() and read files as the ArcadeDB server process despite the sandbox's intended host-I/O restrictions.

CVSS severity8.7
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in ArcadeDB before 26.8.1 allows remote authenticated users to read host files via crafted JavaScript triggers. The GraalPolyglotEngine host-class check passes allowlist entries such as java.util.* to String.matches(), so unescaped dots and wildcards are evaluated as regular-expression metacharacters instead of literal package names. An identity that can create triggers can therefore reach java.util.zip.ZipFile or java.util.jar.JarFile through Java.type() and read files as the ArcadeDB server process despite the sandbox's intended host-I/O restrictions.

The record

CVE
CVE-2026-75840
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-1025, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <26.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Arcade Data · ArcadeDBversion=0 <26.8.1

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1025Comparison Using Wrong Factors
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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