How severe is GHSA-pg2w-x9wp-vw92?

No CVSS score has been assigned to GHSA-pg2w-x9wp-vw92 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-pg2w-x9wp-vw92?

GHSA-pg2w-x9wp-vw92 affects the following packages: requests (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-pg2w-x9wp-vw92?

Update requests to 2.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pg2w-x9wp-vw92 is resolved across your whole dependency graph.

How do I detect GHSA-pg2w-x9wp-vw92 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for requests, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-pg2w-x9wp-vw92 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is GHSA-pg2w-x9wp-vw92 actively exploited in the wild?

No public exploit code has been indexed for GHSA-pg2w-x9wp-vw92 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-pg2w-x9wp-vw92?

GHSA-pg2w-x9wp-vw92 has an EPSS (Exploit Prediction Scoring System) score of 3.2%, placing it in the 88th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was GHSA-pg2w-x9wp-vw92 published, and has it been updated?

GHSA-pg2w-x9wp-vw92 was published on May 13, 2022 and was last updated on December 1, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

Not in CISA KEV

Python Requests Session FixationGHSA-pg2w-x9wp-vw92

Fix: kennethreitz/requests@3bd8afb

GHSA-pg2w-x9wp-vw92 is a security vulnerability in requests. A fix is available for requests — see the affected versions and patch details below.

Also known asCVE-2015-2296PYSEC-2015-17

Published

May 13, 2022

Updated

Dec 1, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

🐍requests

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`requests`	≥ 2.1.0&&< 2.6.0	2.6.0`pip install --upgrade 'requests==2.6.0'`

Affected Products

3 products · 14 configurations

ubuntu linuxcanonical

2 versions

14.0414.10

mageiamageia_project

1 version

4.0

Application

requestspython

11 versions

2.1.02.2.12.3.02.4.02.4.12.4.22.4.32.5.02.5.12.5.22.5.3

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for requests, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update requests to 2.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pg2w-x9wp-vw92 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

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