What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-22
• Weakness: CWE-863

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

• ArcadeData arcadedb: before 26.9.1 — fixed in 26.9.1

How to fix

Upgrade to a fixed version: ArcadeData arcadedb 26.9.1. Check the vendor advisory for mitigations.

References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg
• https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-timeseries-acl-bypass-via-type-permission
• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg

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