# CVE-2015-2296: Python Requests Session Fixation

Source: https://junglewise.ai/threats/cve-2015-2296-python-requests-session-fixation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2015-03-18  
License: CC BY 4.0 with a link back

CVE-2015-2296 · Severity: info · Published 2015-03-18

The resolve_redirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect.

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

## Quick answers

**Is CVE-2015-2296 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2015-2296 being exploited in the wild.

**How severe is CVE-2015-2296?** Informational severity, published 18 March 2015.

**Which products and versions are affected?** requests (PyPI) ECOSYSTEM:introduced=2.1.0,fixed=2.6.0, GIT:introduced=0,fixed=3bd8afbff29e50b38f889b2f688785a669b9aafc|ECOSYSTEM:introduced=2.1.0,fixed=2.6.0.

**Is there a fix for CVE-2015-2296?** Yes. requests (PyPI): upgrade to 2.6.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2015-2296?** Check whether you run requests (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

- requests (PyPI): upgrade to 2.6.0 or later

  ```sh
  pip install "requests>=2.6.0"
  ```


## Affected products

- requests (PyPI) ECOSYSTEM:introduced=2.1.0,fixed=2.6.0, GIT:introduced=0,fixed=3bd8afbff29e50b38f889b2f688785a669b9aafc|ECOSYSTEM:introduced=2.1.0,fixed=2.6.0

## Identifiers

- CVE-2015-2296
- GHSA-pg2w-x9wp-vw92
- PYSEC-2015-17

## Related threats

- [PYSEC-2026-1873 - Requests `Session` object does not verify requests after making first request with verify=False](https://junglewise.ai/threats/cve-2024-35195-requests-session-object-does-not-verify-requests-after-making)
- [Requests has Insecure Temp File Reuse in its extract_zipped_paths() utility function](https://junglewise.ai/threats/cve-2026-25645-requests-has-insecure-temp-file-reuse-in-its-extract-zipped-paths)
- [Requests vulnerable to .netrc credentials leak via malicious URLs](https://junglewise.ai/threats/cve-2024-47081-requests-vulnerable-to-netrc-credentials-leak-via-malicious-urls)
- [Unintended leak of Proxy-Authorization header in requests](https://junglewise.ai/threats/cve-2023-32681-unintended-leak-of-proxy-authorization-header-in-requests)
- [Insufficiently Protected Credentials in Requests](https://junglewise.ai/threats/cve-2018-18074-insufficiently-protected-credentials-in-requests)