# CVE-2019-13611: python-engineio vulnerable to Cross-Site Request Forgery (CSRF)

Source: https://junglewise.ai/threats/cve-2019-13611-python-engineio-vulnerable-to-cross-site-request-forgery-csrf  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-07-16  
License: CC BY 4.0 with a link back

CVE-2019-13611 · Severity: low · CVSS 3 · Published 2019-07-16

An issue was discovered in python-engineio through 3.8.2. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to a server by using a victim's credentials, because the Origin header is not restricted.

Technologies: [python-engineio (PyPI)](https://junglewise.ai/threats/technologies/python-engineio). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2019-13611 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-13611 being exploited in the wild.

**How severe is CVE-2019-13611?** Low severity, with a CVSS score of 3, published 16 July 2019.

**Which products and versions are affected?** python-engineio (PyPI) ECOSYSTEM:introduced=0,fixed=3.9.0.

**Is there a fix for CVE-2019-13611?** Yes. python-engineio (PyPI): upgrade to 3.9.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-13611?** Check whether you run python-engineio (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- python-engineio (PyPI): upgrade to 3.9.0 or later

  ```sh
  pip install "python-engineio>=3.9.0"
  ```


## Affected products

- python-engineio (PyPI) ECOSYSTEM:introduced=0,fixed=3.9.0

## Identifiers

- CVE-2019-13611
- GHSA-j3jp-gvr5-7hwq
- PYSEC-2019-170

## Related threats

- [python-engineio denial of service via unchecked payload size](https://junglewise.ai/threats/cve-2026-48809-python-engineio-denial-of-service-via-unchecked-payload-size)
- [python-engineio denial of service via unbound thread allocation](https://junglewise.ai/threats/cve-2026-48802-python-engineio-denial-of-service-via-unbound-thread-allocation)