CVE-2020-7965

Description

flaskparser.py in Webargs 5.x through 5.5.2 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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory readthedocs.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://webargs.readthedocs.io/en/latest/changelog.html release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-7965?
CVE-2020-7965 has been scored as a high severity vulnerability.
How to fix CVE-2020-7965?
To fix CVE-2020-7965, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7965 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-7965 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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