ToolJet Database Privilege Escalation via Unvalidated Join Tables

ToolJet Database versions before v3.16.44 contain a privilege escalation vulnerability in the join_tables endpoint that grants JOIN_TABLES ability to all authenticated users without role or workspace membership validation. Attackers can read arbitrary ToolJet Database tables from any workspace by supplying victim workspace identifiers in the request path while authenticating with their own workspace credentials.

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

ToolJet Database versions before v3.16.44 suffer from a critical privilege escalation flaw in the join_tables endpoint that fails to validate user roles or workspace membership. This vulnerability allows any authenticated user to escalate their privileges and access tables from workspaces they don't belong to—simply by providing a victim's workspace identifier in their request. With a CVSS score of 7.7, this represents a significant data breach risk for multi-tenant deployments where workspace isolation is a fundamental security boundary. Organizations running affected ToolJet Database instances face exposure of sensitive data across workspace boundaries, making this particularly dangerous in environments where different teams or customers share the same infrastructure.

Casky's 283 mapped skills leverage Claude AI's extended reasoning to detect the attack patterns underlying this vulnerability across two critical MITRE ATT&CK techniques: Privilege Escalation (TA0004) and Credential Access (TA0006). Practitioners using Casky would identify detection signals including anomalous cross-workspace API calls to join_tables endpoints, authentication tokens being used to access resources outside their authorized scope, and enumeration patterns where a single user systematically queries multiple workspace identifiers. The platform's skills would surface authorization bypass indicators—specifically, requests succeeding with insufficient privilege levels—and flag the absence of workspace membership validation in API responses. These behavioral patterns reveal the exploitation chain: an attacker authenticating legitimately, then pivoting to unauthorized data access without triggering typical lateral movement alerts, enabling defenders to catch this subtle privilege escalation before data exfiltration occurs.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-82869.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

Investigate the attack patterns behind CVE-2026-82869

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