CVE-2026-25039 PUBLISHED

The application evaluate UNC path in workspace name

Assigner: GitHub_M
Reserved: 28.01.2026 Published: 20.07.2026 Updated: 20.07.2026

Parsec is a cloud-based application for simple and cryptographically secure file sharing. The application does not sanitize the workspace name, creating a vulnerability if that workspace name is a UNC path. When creating mountpoint in the windows filesystem to mount the workspace of an organization, the application does not sanitize the workspace name. The cause issue if the workspace name evaluate to a UNC path since it's allowed for the name to containt \ char. If the UNC path is invalid (or the targeted resource is not available) the application become unresponsive otherwise the system will interact with the mounted UNC path allowing the attacker to retrieve to [NTLM] hash.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor Scille
Product parsec-cloud
Versions
  • Version < 3.3.3-rc.0 is affected

References

Problem Types

  • CWE-40: Path Traversal: 'UNCsharename' (Windows UNC Share) CWE