Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the li
Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library, who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend, and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration, so the security impact of this vulnerability is low.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | urllib3 | >= 1.17, < 1.18.1 | 1.18.1 |
Referencias
- https://nvd.nist.gov/vuln/detail/CVE-2016-9015
- https://github.com/urllib3/urllib3/commit/c32cdbc16a9634fa0f8c829d1270301570158715
- https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2017-98.yaml
- https://github.com/urllib3/urllib3
- https://web.archive.org/web/20210123184150/http://www.securityfocus.com/bid/93941
- http://www.openwall.com/lists/oss-security/2016/10/27/6
- http://www.securityfocus.com/bid/93941
- https://github.com/advisories/GHSA-v4w5-p2hg-8fh6
- Vector CVSS
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N- Debilidad (CWE)
CWE-295- Plataforma
- Python (PyPI)
- Paquete
urllib3- Publicada
- 11.01.2017
- Actualizado
- 11.10.2026 12:20
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-v4w5-p2hg-8fh6 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2017-98 - PyPA Advisory Database; CC BY 4.0
Historial de vulnerabilidades: urllib3
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
- 22
- Primera → última
- 01.2017 09.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 1
- Alta 11
- Media 10
Divulgaciones por año
- 2017: 1
- 2018: 1
- 2019: 2
- 2020: 2
- 2021: 2
- 2022: 0
- 2023: 3
- 2024: 1
- 2025: 4
- 2026: 6
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Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the li esta entrada
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