league/flysystem vulnerabilities

File storage abstraction for PHP

Registry: Composer
Latest: 3.36.0
License: MIT
Source: github.com/thephpleague/flysystem (opens the source repository in a new tab)

2 known advisories

The latest version, 3.36.0, is not affected by any of them. Projects on older versions may be.

Update to the latest version:composer require league/flysystem:^3.36.0

Check the version you use

Security advisories for league/flysystem

LowGHSA-cxf4-7mrp-vvpr29 Sept 2026
Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter
Affected
<3.35.3
Fixed in
3.35.3
CriticalGHSA-9f46-5r25-5wfm29 Jun 2021
Time-of-check Time-of-use (TOCTOU) Race Condition in league/flysystem
Affected
<1.1.4 · >=2.0.0 <2.1.1
Fixed in
1.1.4, 2.1.1

Which of your client projects still run an old league/flysystem?

NPMscan reads the composer.lock in every GitHub repo you pick and checks each installed version against these advisories, including the packages your packages pull in. Each finding comes with the command that fixes it.

Scan a project free, no signup Or connect GitHub to scan every repo

Other Composer packages

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily. Package details from the Composer registry.