auth0-PHP SDK Does Not Properly Handle File Types in Bulk User Import

Description

Overview

In applications built with the Auth0-PHP SDK, the Bulk User Import endpoint does not validate the file path wrapper or value. Without proper validation, affected applications may accept arbitrary file paths or URLs.

Am I affected?

You are affected by this vulnerability if you meet the following preconditions:
1. Applications using the Auth0-PHP SDK, versions between v3.3.0 and v8.16.0, or
2. Applications using the following SDKs that rely on the Auth0-PHP SDK versions between v3.3.0 and v8.16.0:
a. Auth0/symfony,
b. Auth0/laravel-auth0,
c. Auth0/wordpress.

Fix

Upgrade Auth0/Auth0-PHP to version 8.17.0 or greater.

Acknowledgement

Okta would like to thank Mohamed Amine Saidani (pwni) for discovering this vulnerability.

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-10-01 21:20:45 UTC
Updated
2025-10-01 21:37:31 UTC
GitHub reviewed
2025-10-01 21:20:45 UTC
NVD published
2025-10-01

EPSS Score

Score Percentile
0.08% 23.49%

CVSS Scores

Base score Version Severity Vector
3.3 3.1
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

CWEs

CWE id Name
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-434 Unrestricted Upload of File with Dangerous Type

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer auth0/auth0-php >= 3.3.0, <= 8.16.0 8.17.0

References

cvelogic Threat Intelligence