Critical severity · published Aug 18, 2026
CVE-2026-75852
ArcadeDB MongoDB wire protocol authentication bypass cross-database
9.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
arcadedb · ArcadeData
before 26.8.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75852
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75852
github.com
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fq9c-x968-g278
www.vulncheck.com
https://www.vulncheck.com/advisories/arcadedb-mongodb-wire-protocol-authentication-bypass-cross-database
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