(0Day) Genesis World MJCF Directory Traversal Information Disclosure Vulnerability

October 13th, 2026

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Genesis World. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the parsing of MJCF files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of the current process.

Additional Details

07/16/26 - ZDI emailed a Genesis World contributor to request a secure channel for vulnerability disclosures
07/28/26 - ZDI asked the vendor to update their security policy via a GitHub issue
07/28/26 - the vendor closed the issue
08/06/26 - ZDI followed up requesting the vendor’s PSIRT contacts
09/11/26 - ZDI notified the vendor of the intention to publish the case as a 0-day advisory

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product


Disclosure Timeline

  • 2026-09-25 - Vulnerability reported to vendor
  • 2026-10-13 - Coordinated public release of advisory
  • 2026-10-13 - Advisory Updated

Credit

Aaron Luo of VicOne LAB R7

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