CVE-2026-75852 ArcadeDB MongoDB wire protocol authentication bypass cross-database
Unauthenticated attackers can read and modify data in any database via the MongoDB wire protocol due to missing SASL authentication enforcement.
- 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-2026-75852?
CVE-2026-75852 is a critical authentication bypass 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 versions before 26.8.1 fail to enforce SASL authentication on data commands in the MongoDB wire-protocol plugin. Unauthenticated attackers can issue insert, find, update, delete, and create commands against any database by connecting to port 27017 without credentials.
Weakness: CWE-306
Which versions are affected by CVE-2026-75852?
How do I fix CVE-2026-75852?
No fix has been published for CVE-2026-75852 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-2026-75852 being exploited?
There is no known exploitation of CVE-2026-75852 in the wild and no public exploit code.
Sources
Also known as GHSA-fq9c-x968-g278, GHSA-xgx7-2w7q-r9mc.