Requests `Session` object does not verify requests after making first request with verify=False
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.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | requests | < 2.32.0 | 2.32.0 |
Referencias
- https://github.com/psf/requests/security/advisories/GHSA-9wx4-h78v-vm56
- https://nvd.nist.gov/vuln/detail/CVE-2024-35195
- https://github.com/psf/requests/pull/6655
- https://github.com/psf/requests/commit/a58d7f2ffb4d00b46dca2d70a3932a0b37e22fac
- https://github.com/psf/requests
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IYLSNK5TL46Q6XPRVMHVWS63MVJQOK4Q
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N7WP6EYDSUOCOJYHDK5NX43PYZ4SNHGZ
- https://pypi.org/project/requests
- https://github.com/advisories/GHSA-9wx4-h78v-vm56
- Vector CVSS
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N- Debilidad (CWE)
CWE-670- Plataforma
- Python (PyPI)
- Paquete
requests- Publicada
- 20.05.2024
- Actualizado
- 11.10.2026 15:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-1873 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-9wx4-h78v-vm56 - CC BY 4.0
Historial de vulnerabilidades: requests
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 8
- Primera → última
- 10.2014 03.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 1
- Media 7
Divulgaciones por año
- 2017: 0
- 2018: 1
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 1
- 2024: 1
- 2025: 1
- 2026: 1
antes: 3
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Requests `Session` object does not verify requests after making first request with verify=False esta entrada
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