CVE-2021-32838

Regular Expression Denial of Service in flask-restx

Description

Flask-RESTX (pypi package flask-restx) is a community driven fork of Flask-RESTPlus. Flask-RESTX before version 0.5.1 is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex. This is fixed in version 0.5.1.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.37% Top 25%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: python-restx flask-restx
Published at:
Updated at:

References

Link Tags
https://github.com/advisories/GHSA-3q6g-vf58-7m4g third party advisory
https://github.com/python-restx/flask-restx/issues/372 patch third party advisory issue tracking
https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da third party advisory patch
https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51 third party advisory patch
https://pypi.org/project/flask-restx/ product third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-32838?
CVE-2021-32838 has been scored as a high severity vulnerability.
How to fix CVE-2021-32838?
To fix CVE-2021-32838, 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-2021-32838 being actively exploited in the wild?
It is possible that CVE-2021-32838 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32838?
CVE-2021-32838 affects python-restx flask-restx.
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