CVE-2026-6418 MEDIUM

CVE-2026-6418: PaperCut NG/MF: Path Traversal in Shared Account Synchronization

Vendor Papercut
Product PaperCut NG/MF
Weakness CWE-36
Published May 5, 2026
Last update June 16, 2026

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

What the vulnerability does

01Description

An issue was discovered in the Shared Account Synchronization component of PaperCut MF (version 25.0.4). The application allows administrative users to configure a source path for account data synchronization. Due to a lack of proper path validation and sanitization, an authenticated user with administrative privileges can specify arbitrary file paths on the local file system. This allows for the enumeration of directory structures and the unauthorized reading of sensitive text-based configuration or system files. When the synchronization process is triggered, the application attempts to parse the contents of the specified file, subsequently exposing the data within the application's account management interface. This vulnerability could lead to the disclosure of sensitive system information or configuration details, depending on the permissions of the service account under which the application is running.

Key dates

02Disclosure timeline

May 5, 2026 CVE published
June 16, 2026 Record updated