# CVE-2020-35678: PYSEC-2020-25 - Autobahn|Python before 20.12.3 allows redirect header injection.

Source: https://junglewise.ai/threats/cve-2020-35678-open-redirect-in-autobahn  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-12-27  
License: CC BY 4.0 with a link back

CVE-2020-35678 · Severity: low · CVSS 3.1 · Published 2020-12-27

Autobahn|Python before 20.12.3 allows redirect header injection.

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

## Quick answers

**Is CVE-2020-35678 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-35678 being exploited in the wild.

**How severe is CVE-2020-35678?** Low severity, with a CVSS score of 3.1, published 27 December 2020.

**Which products and versions are affected?** autobahn (PyPI) ECOSYSTEM:introduced=0,fixed=20.12.3.

**Is there a fix for CVE-2020-35678?** Yes. autobahn (PyPI): upgrade to 20.12.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-35678?** Check whether you run autobahn (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

- autobahn (PyPI): upgrade to 20.12.3 or later

  ```sh
  pip install "autobahn>=20.12.3"
  ```


## Affected products

- autobahn (PyPI) ECOSYSTEM:introduced=0,fixed=20.12.3

## Identifiers

- CVE-2020-35678
- GHSA-gwp7-vqr5-h33h
- PYSEC-2020-25

## Related threats

- [Autobahn Python memory exhaustion in Brotli decompression](https://junglewise.ai/threats/cve-2026-116579-autobahn-python-is-a-websocket-and-wamp-implementation-for)
- [Autobahn Python permessage-deflate decompression bypass in maxMessagePayloadSize](https://junglewise.ai/threats/cve-2026-77528-autobahn-python-permessage-deflate-decompression-bypass-in)
- [Timing attack](https://junglewise.ai/threats/timing-attack-b1717e88)