Apache Atlas DSL Code Injection via Gremlin Traversal Manipulation

Description: Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Atlas Apache Atlas exposes a DSL search endpoint that accepts user-supplied query strings. Attacker can alter Gremlin traversal logic within grammar-allowed characters to access unintended data Affect Version: This issue affects Apache Atlas: from 0.8 through 2.4.0. For the affect version >= 2.0, vulnerability is only when Atlas is deployed with below non-default configuration. atlas.dsl.executor.traversal=false Mitigation: Users are recommended to upgrade to version 2.5.0, which fixes the issue.

Casky was already ahead

This CVE exploits attack patterns that Casky's 301matched 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

Apache Atlas contains a critical code injection vulnerability in its DSL search endpoint that allows attackers to manipulate Gremlin traversal logic through specially crafted query strings. By exploiting grammar-allowed characters, an unauthenticated attacker can alter the intended data access patterns and retrieve sensitive information they shouldn't have access to. This vulnerability affects Apache Atlas versions 0.8 through 2.4.0, with versions 2.0 and above only vulnerable under specific non-default configurations. Organizations using Atlas for metadata management and data governance face direct exposure to unauthorized data access and potential compliance violations.

Casky's 301 matching skills leverage Claude AI's extended reasoning to detect the attack patterns mapped to MITRE ATT&CK techniques TA0001 (Reconnaissance) and TA0043 (Reconnaissance). Practitioners using Casky would identify malicious DSL queries attempting to traverse unintended graph paths, spotting anomalous Gremlin syntax deviations that indicate code injection attempts. The platform flags suspicious query patterns that deviate from legitimate metadata search behavior, highlighting where attackers probe Atlas endpoints to discover exploitable grammar gaps. Security teams gain visibility into CWE-94 code generation flaws by correlating suspicious query logs with known injection payloads, enabling rapid detection of both reconnaissance probes and active exploitation attempts against their Atlas deployments.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

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 →

301 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-40563.

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

Run

analyzing-campaign-attribution-evidence

threat intelligence · low

Run

analyzing-certificate-transparency-for-phishing

threat intelligence · low

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-40563

Casky has 301 skills that investigate the attack patterns behind CVE-2026-40563. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn