ToolJet Multi-Tenant Data Exposure via Insufficient Access Control

ToolJet before v3.16.208 fails to validate organization membership in database read routes, allowing any authenticated user to access other organizations' table schemas and row data. Attackers can supply arbitrary organization IDs in URL parameters to list tables, retrieve column definitions, and execute join queries to read actual stored data from victim organizations.

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 versions before 3.16.208 suffer from inadequate organization membership validation in database read operations, creating a critical multi-tenant isolation failure. Authenticated users can manipulate organization ID parameters in API requests to bypass access controls and enumerate table schemas, column definitions, and actual row data belonging to other organizations. This vulnerability directly impacts any organization running vulnerable ToolJet instances, exposing sensitive business data, customer information, and potentially regulated data subject to compliance requirements. The attack requires only valid authentication credentials—no privilege escalation necessary—making it particularly dangerous in environments where multiple organizations share a single ToolJet deployment.

Casky's 283 mapped security skills leverage Claude's extended reasoning to detect the MITRE ATT&CK patterns underlying this vulnerability: TA0004 (Privilege Escalation) manifests as unauthorized lateral movement between organizational contexts without explicit privilege grant, while TA0006 (Credential Access) emerges from the systematic extraction of schema and row-level data. Practitioners using Casky would identify detection signals including anomalous organization ID parameter variations in database read logs, successful table schema queries from users outside the target organization, and cross-organization join operations in audit trails. The platform's skill-based analysis would correlate these patterns with CWE-862 (Missing Authorization) to surface the root cause: absence of organization context validation before data retrieval, enabling attackers to progressively enumerate and exfiltrate multi-tenant data through seemingly legitimate authenticated requests.

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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-2026-82871.

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-2026-82871

Casky has 283 skills that investigate the attack patterns behind CVE-2026-82871. Run one and get CVSS-scored findings in 3 minutes.

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