Adobe ColdFusion deleteVersion Directory Traversal Arbitrary File Deletion Vulnerability

April 15th, 2026
ZDI-26-262 ZDI-CAN-29549

CVE ID

CVE-2026-34619

CVSS Score

5.4 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Affected Vendors

Adobe

Affected Products

ColdFusion

Vulnerability Details

This vulnerability allows remote attackers to delete arbitrary files on affected installations of Adobe ColdFusion. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the deleteVersion method. The issue results from the lack of proper validation of user-supplied data prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of the service account.

Additional Details

Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/coldfusion/apsb26-38.html

Disclosure Timeline

  • 2026-03-25 - Vulnerability reported to vendor
  • 2026-04-15 - Coordinated public release of advisory
  • 2026-04-15 - Advisory Updated

Credit

Jonathan Lein of TrendAI Research

Back to Advisories