Multi-Tenant Database Isolation Bypass in ToolJet

ToolJet before v3.16.208 fails to validate organizationId ownership in database write and destroy routes, allowing any builder-role user to create, alter, or drop tables in other organizations' databases. Attackers can exploit missing organization-resolving guards to permanently delete tables, insert arbitrary data, and modify schemas across tenant boundaries on shared instances.

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 contain a critical authorization flaw where database write and destroy operations fail to validate organizationId ownership. This allows any user with builder-role permissions to access, modify, and delete database tables belonging to other organizations on shared instances. The vulnerability is particularly dangerous in multi-tenant SaaS deployments where data isolation is fundamental to security posture. Organizations running affected ToolJet versions face risks of data exfiltration, integrity compromise, and denial of service through unauthorized schema manipulation across tenant boundaries.

Casky's 283 matched skills leverage Claude's extended reasoning to detect the attack patterns mapped to TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would identify suspicious findings including: unauthorized CREATE/ALTER/DROP statements executed by builder-role accounts against organizationIds that don't match the user's assigned tenant, anomalous schema changes correlating with cross-organization database connections, and write operations lacking proper organization-resolving guard validation in HTTP request chains. The platform's Claude-powered analysis would flag privilege escalation patterns where low-privilege builders escalate to administrative database operations, and credential access indicators where organizational boundaries are bypassed to enumerate or exfiltrate data from peer tenants. Security teams would see these findings correlated against the specific routes vulnerable to missing authorization checks.

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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-2026-82870.

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-2026-82870

Casky has 283 skills that investigate the attack patterns behind CVE-2026-82870. Run one and get CVSS-scored findings in 3 minutes.

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