CVE-2026-6418: PaperCut NG/MF: Path Traversal in Shared Account Synchronization
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
PaperCut MF (Shared Account Synchronization)to a version that resolves this vulnerability.Fixed in 25.0.4Patch PaperCut NG/MF: Path Traversal in Shared Account Synchronization - Configuration
In the Shared Account Synchronization configuration, ensure the configured source path is properly validated and sanitized so administrative users cannot specify arbitrary file paths on the local file system.
PaperCut MF - Shared Account Synchronization source path for account data synchronization = Validate/sanitize configured source path and restrict it to an allowed directory (prevent arbitrary local file paths)
Event History
Frequently Asked Questions
What is the severity of CVE-2026-6418?
CVE-2026-6418 is considered a high severity vulnerability due to its potential for path traversal.
How do I fix CVE-2026-6418?
To mitigate CVE-2026-6418, ensure that you update PaperCut MF to the latest version beyond 25.0.4.
What systems are affected by CVE-2026-6418?
CVE-2026-6418 affects PaperCut MF version 25.0.4.
What type of vulnerability is CVE-2026-6418?
CVE-2026-6418 is classified as a path traversal vulnerability.
Who can exploit CVE-2026-6418?
CVE-2026-6418 can be exploited by administrative users who have the capability to configure a source path for account data synchronization.