CVE-2021-32838
HIGHCVSS 7.5/10EPSS 1.80%
Last modified
CVE-2021-32838 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Flask-Restx Project | Flask-Restx | < 0.5.1 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
References
- https://github.com/advisories/GHSA-3q6g-vf58-7m4gThird Party Advisory
- https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656daPatch, Third Party Advisory
- https://github.com/python-restx/flask-restx/issues/372Issue Tracking, Patch, Third Party Advisory
- https://pypi.org/project/flask-restx/Product, Third Party Advisory
- https://github.com/advisories/GHSA-3q6g-vf58-7m4gThird Party Advisory
- https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656daPatch, Third Party Advisory
- https://github.com/python-restx/flask-restx/issues/372Issue Tracking, Patch, Third Party Advisory
- https://pypi.org/project/flask-restx/Product, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-32838?
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.
How severe is CVE-2021-32838?
CVE-2021-32838 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-32838?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-32838?
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