Advisories

File Browser through 2.63.23 Path Traversal via Symlink Alias

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severity
high
date
Affecting
  • filebrowser <= 2.63.23

CWE
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')
CVSS
7.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
SAYUTIM
Description
File Browser through 2.63.23 applies path rules to the requested lexical path but resolves symbolic links without reapplying rules to the target, allowing authenticated users to bypass deny rules. Attackers can read and overwrite rule-denied files by accessing them through in-scope symbolic link aliases that resolve to denied paths.

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