VULNERABILITY INTELLIGENCE

CVE-2026-55667

CVSS score8.2 HIGH
EPSS probability0.49%
CISA KEVNot currently listed
Published2026-06-25
Last modified2026-06-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.16, a scoped, non-admin File Browser user holding only the Create permission can delete arbitrary files outside their scope (other tenants' data, and the application's own database) via the upload failure-cleanup path. ScopedFs.RemoveAll is the one dereferencing operation that skips the symlink guard every other method enforces. The direct-upload handler runs RemoveAll on the user-controlled path during failed-upload cleanup, gated only by Perm.Create. If an escaping directory symlink already exists inside the user's scope, an authenticated create-only user can delete an out-of-scope target, bypassing both the ScopedFs boundary and the Perm.Delete gate. This vulnerability is fixed in 2.63.16.

Weakness classification

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

Primary references