CVE-2026-40563: Apache Atlas: Script injection allows access to unintended data

[Pinal Shah <pinal () apache org>]

Severity: important 

Affected versions:

- Apache Atlas (org.apache.atlas:atlas-repository) 0.8 through 2.4.0

Description:

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.

Credit:

Khaled M. Alshammri (finder)
qx L (finder)

References:

https://atlas.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-40563