CVE-2023-34457 MEDIUM

CVE-2023-34457: MechanicalSoup vulnerable to malicious web server reading arbitrary files on client using file input inside HTML form

Vendor Mechanicalsoup
Product MechanicalSoup
Weakness CWE-20 · Input validation
Published July 5, 2023
Last update February 13, 2025
View on NVD All CVEs

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

MechanicalSoup is a Python library for automating interaction with websites. Starting in version 0.2.0 and prior to version 1.3.0, a malicious web server can read arbitrary files on the client using a `<input type="file" ...>` inside HTML form. All users of MechanicalSoup's form submission are affected, unless they took very specific (and manual) steps to reset HTML form field values. Version 1.3.0 contains a patch for this issue.

Key dates

02Disclosure timeline

July 5, 2023 CVE published
February 13, 2025 Record updated