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CVE-2024-35195 — Vulnerability in requests — CVE Details

MEDIUM

Requests `Session` object does not verify requests after making first request with verify=False

Published May 20, 2024Updated September 10, 2026Source: osv

What Should I Do?

Address in Next Maintenance Window

Low exploitation probability (0.05%). Schedule for your next planned update.

Summary

When using a `requests.Session`, if the first request to a given origin is made with `verify=False`, TLS certificate verification may remain disabled for all subsequent requests to that origin, even if `verify=True` is explicitly specified later. This occurs because the underlying connection is reused from the session's connection pool, causing the initial TLS verification setting to persist for the lifetime of the pooled connection. As a result, applications may unintentionally send requests without certificate verification, leading to potential man-in-the-middle attacks and compromised confidentiality or integrity. This behavior affects versions of `requests` prior to 2.32.0.

Advisory Timeline

  • First published May 20, 2024 (875 days ago).
  • Last revised September 10, 2026 — 842 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update requests to 2.32.0 or later
pip install "requests>=2.32.0"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
requests
pypi
0.0.1, 0.10.0, 0.10.1, 0.10.2 (+147 more)2.32.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.6 score means for each attack dimension.

Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

References

Frequently Asked Questions

What is CVE-2024-35195?
Requests `Session` object does not verify requests after making first request with verify=False This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.6/10).
How do I check if my project is affected by CVE-2024-35195?
CVE-2024-35195 affects requests. It has a 0.05% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2024-35195 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
5.6

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

EPSS Score (30-day exploit probability)
0.05%
Higher than 14% of vulnerabilities

This is a below-median EPSS score — only 14.1% of tracked vulnerabilities score at or below it, so most tracked vulnerabilities are considered more likely to be exploited than this one.

Also Known As

GHSA-9wx4-h78v-vm56
PYSEC-2026-1873

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