PyPi: Webargs

CVE-2020-7965

Safety vulnerability ID: 37684

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Jan 29, 2020 Updated at Nov 29, 2024

Scan your Python projects for vulnerabilities →

Advisory

Webargs 5.5.2 and 6.0.0b4 include a fix for CVE-2020-7965: Flaskparser.py in Webargs doesn't check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.

Affected package

webargs

Latest version: 8.6.0

Declarative parsing and validation of HTTP request objects, with built-in support for popular web frameworks, including Flask, Django, Bottle, Tornado, Pyramid, Falcon, and aiohttp.

Affected versions

Fixed versions

Vulnerability changelog

********************

Bug fixes:

* :cve:`CVE-2020-7965`: Don't attempt to parse JSON if request's content type is mismatched
(bugfix from 5.5.3).

Resources

Use this package?

Scan your Python project for dependency vulnerabilities in two minutes

Scan your application

Severity Details

CVSS Base Score

HIGH 8.8

CVSS v3 Details

HIGH 8.8

Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality Impact (C): HIGH
Integrity Impact (I): HIGH
Availability Availability (A): HIGH

CVSS v2 Details

MEDIUM 6.8

Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (Au): NONE
Confidentiality Impact (C): PARTIAL
Integrity Impact (I): PARTIAL
Availability Impact (A): PARTIAL