Vulnerability · Published Sep 18, 2026 · Assigned by VulnCheck

CVE-2026-93593ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission

High 8.1

In plain English

A high-severity incorrect authorization in arcadedb from ArcadeData. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 69.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for TimeSeries types because the ACL resolver builds permissions from bucket IDs, but TimeSeries types do not own normal record buckets. An authenticated low-privilege user can read or insert TimeSeries samples despite explicit deny rules by exploiting the missing type-name-based access check that causes permission lookups to fail open.

Affected products (as reported)

Vendor	Product	Versions
ArcadeData	arcadedb	0 – before 26.9.1

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-wjhv-79gv-2pqg) vendor-advisory
VulnCheck Advisory: ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission third-party-advisory