Critical severity · published Aug 18, 2026
CVE-2026-75843
ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
9.9
CVSS
0.4%
EPSS
No
On KEV
Description
ArcadeDB before 26.8.1 fails to bind the authenticated principal on the gRPC transaction executor thread in beginTransaction, allowing authenticated readers to execute JavaScript commands without scripting authorization checks. Attackers can execute executeCommand with a transaction ID to run unrestricted JavaScript that creates server-wide administrator accounts.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% 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-2026-75843
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75843
github.com
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-p29f-345w-4qwf
www.vulncheck.com
https://www.vulncheck.com/advisories/arcadedb-before-privilege-escalation-via-grpc-transaction
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