# CVE-2021-3654: PYSEC-2026-693 - Open Redirect in CPython that affects users of OpenStack Nova

Source: https://junglewise.ai/threats/cve-2021-3654-open-redirect-in-cpython-that-affects-users-of-openstack-nova  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-02  
License: CC BY 4.0 with a link back

CVE-2021-3654 · Severity: low · CVSS 3.1 · Published 2026-07-02

Open Redirect in CPython that affects users of OpenStack Nova

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

## Quick answers

**Is CVE-2021-3654 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-3654 being exploited in the wild.

**How severe is CVE-2021-3654?** Low severity, with a CVSS score of 3.1, published 2 July 2026.

**Which products and versions are affected?** nova (PyPI) ECOSYSTEM:introduced=0,fixed=21.2.3, ECOSYSTEM:introduced=0,fixed=21.2.3,introduced=22.0.0,fixed=22.2.3,introduced=23.0.0,fixed=23.0.3.

**Is there a fix for CVE-2021-3654?** Yes. nova (PyPI): upgrade to 21.2.3, 23.0.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2021-3654?** Check whether you run nova (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

- nova (PyPI): upgrade to 21.2.3, 23.0.3 or later

  ```sh
  pip install "nova>=23.0.3"
  ```


## Affected products

- nova (PyPI) ECOSYSTEM:introduced=0,fixed=21.2.3, ECOSYSTEM:introduced=0,fixed=21.2.3,introduced=22.0.0,fixed=22.2.3,introduced=23.0.0,fixed=23.0.3

## Identifiers

- CVE-2021-3654
- GHSA-vqp6-j452-j6wp
- PYSEC-2026-693

## Related threats

- [PYSEC-2026-2493 - OpenStack Cinder, Glance, and Nova vulnerable to arbitrary file access](https://junglewise.ai/threats/cve-2024-32498-openstack-cinder-glance-and-nova-vulnerable-to-arbitrary-file)
- [PYSEC-2026-1709 - OpenStack Nova vulnerable to unauthorized access to potentially sensitive data](https://junglewise.ai/threats/cve-2024-40767-openstack-nova-vulnerable-to-unauthorized-access-to-potentially)
- [PYSEC-2026-868 - OpenStack Cinder, glance, and Nova vulnerable to Path Traversal](https://junglewise.ai/threats/cve-2022-47951-openstack-cinder-glance-and-nova-vulnerable-to-path-traversal)
- [PYSEC-2026-882 - OpenStack Nova Changing vnic_type breaks compute service restart](https://junglewise.ai/threats/cve-2022-37394-openstack-nova-changing-vnic-type-breaks-compute-service-restart)
- [PYSEC-2026-857 - OpenStack Nova can leak consoleauth token into log files](https://junglewise.ai/threats/cve-2015-9543-openstack-nova-consoleauth-token-leak-into-log-files)