Is CVE-2026-75852 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75852 being exploited in the wild.

How severe is CVE-2026-75852?

Critical severity, with a CVSS score of 9.8, published 18 August 2026.

Which products and versions are affected?

ArcadeData ArcadeDB before 26.8.1.

Is there a fix for CVE-2026-75852?

A patch was published on 2026-08-18: Version 26.8.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-75852 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-75852?

Check whether you run ArcadeData ArcadeDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75852: ArcadeDB MongoDB wire protocol authentication bypass

CVE-2026-75852 · Severity: critical · CVSS 9.8 · Published 2026-08-18

ArcadeDB is a multi-model database engine that includes a MongoDB compatibility layer. The MongoDB wire-protocol plugin fails to enforce authentication on database commands, allowing unauthenticated attackers to read, modify, or delete data from any database by connecting directly to port 27017 without credentials. This represents a complete compromise of data confidentiality, integrity, and availability for all databases on the affected instance.

Technologies: ArcadeData ArcadeDB. Vendors: ArcadeData.

Quick answers

Is CVE-2026-75852 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75852 being exploited in the wild.
How severe is CVE-2026-75852?: Critical severity, with a CVSS score of 9.8, published 18 August 2026.
Which products and versions are affected?: ArcadeData ArcadeDB before 26.8.1.
Is there a fix for CVE-2026-75852?: A patch was published on 2026-08-18: Version 26.8.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-75852 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-75852?: Check whether you run ArcadeData ArcadeDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a missing authentication enforcement (CWE-306) and missing authorization check (CWE-862) in ArcadeDB's MongoDB wire-protocol plugin. The handleCommand method in MongoDBBackend.java only validates SASL authentication for saslStart and saslContinue operations; all data commands (insert, find, update, delete, create) bypass authentication and pass directly to the parent handler. Additionally, no authenticated user state is bound to the connection, so all ACLs are disabled. An unauthenticated network attacker can connect to port 27017 and issue arbitrary data commands against any database without credentials. The vulnerability affects versions up to and including 26.7.3; patch version 26.8.1 is available.

Affected products

ArcadeData ArcadeDB before 26.8.1

Timeline

2026-08-04: disclosed
2026-08-18: patched: Version 26.8.1 released

References

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