Medium severity · published May 5, 2026
CVE-2026-6418
PaperCut NG/MF: Path Traversal in Shared Account Synchronization
4.9
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PM
PaperCut MF/NG · PaperCut
before 25.0.11 · source: NVD
PN
PaperCut NG/MF · PaperCut
before 25.0.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6418
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6418
Mitigation
https://www.papercut.com/kb/Main/papercut-ng-mf-and-papercut-hive-security-bulletin-may-2026/
More from PaperCut MF/NG
9.8
CVE-2026-81578
PaperCut MF/NG: Authentication Bypass
9.8
CVE-2023-27350
PaperCut MF/NG Improper Access Control Vulnerability
9.1
CVE-2026-82078
PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
8.8
CVE-2023-2533
PaperCut MF/NG 22.0.10 (Build 65996 2023-03-27) - Remote code execution via CSRF
7.5
CVE-2023-27351
PaperCut NG/MF Improper Authentication Vulnerability
