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CVE-2024-35195

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

Impact

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.

Affected packages

EcosystemPackageAffectedFixed in
piprequests< 2.32.02.32.0

Affected products

ProductAffected versions
Requests Is A HTTP Library.
before 2.32.0

Versions were read from the advisory text. No structured product data has been published for this record yet.

Weakness classification

CWE-670

References