ArcadeDB Missing Authorization in DELETE FUNCTION

ArcadeDB before 26.8.1 (affected versions <= 26.7.3) contains a missing authorization vulnerability in the DELETE FUNCTION SQL statement. DeleteFunctionStatement.executeSimple unregisters and persists deletion of a server-side function without any checkPermissionsOnDatabase (UPDATE_SCHEMA) check. Any user with database access can execute DELETE FUNCTION via the command API (POST /api/v1/command/{db}) to permanently remove any registered server-side function, including security-relevant logic, impacting integrity and availability.

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

ArcadeDB versions 26.7.3 and earlier contain a critical authorization bypass in the DELETE FUNCTION SQL statement. The vulnerability allows any user with database access to permanently remove server-side functions without requiring UPDATE_SCHEMA permissions. This is particularly dangerous because attackers can delete security-critical functions that enforce business logic, access controls, or data validation rules, potentially leading to privilege escalation, data integrity violations, or complete security control circumvention. Organizations running affected ArcadeDB instances with multi-user database access are at immediate risk, as the attack requires only basic database connectivity and no additional exploitation complexity.

Casky's 283 matching skills leverage Claude AI's extended reasoning to detect the attack patterns underlying this vulnerability across the MITRE ATT&CK framework. For TA0004 (Privilege Escalation), practitioners would identify unauthorized schema modifications and permission bypasses through command API monitoring—specifically anomalous POST requests to /api/v1/command/{db} executing DELETE FUNCTION statements from low-privilege accounts. Under TA0006 (Defense Evasion), the skills surface deletion of security-relevant logging, auditing, or enforcement functions that would normally prevent or detect malicious activity. Casky enables practitioners to map these behavioral indicators to specific attack chains, correlate database audit logs with function registry changes, and establish baselines for legitimate schema modifications versus suspicious bulk function deletions that suggest compromise.

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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-2026-75846.

abusing-dpapi-for-credential-access

red teaming · high

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abusing-shadow-credentials-for-privesc

red teaming · high

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Access with Stolen Session Cookie

cryptography · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

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