Scrapy's redirects ignoring scheme-specific proxy settings
Impact
When using system proxy settings, which are scheme-specific (i.e. specific to http:// or https:// URLs), Scrapy was not accounting for scheme changes during redirects.
For example, an HTTP request would use the proxy configured for HTTP and, when redirected to an HTTPS URL, the new HTTPS request would still use the proxy configured for HTTP instead of switching to the proxy configured for HTTPS. Same the other way around.
If you have different proxy configurations for HTTP and HTTPS in your system for security reasons (e.g., maybe you don’t want one of your proxy providers to be aware of the URLs that you visit with the other one), this would be a security issue.
Patches
Upgrade to Scrapy 2.11.2.
Workarounds
Replace the built-in retry middlewares (RedirectMiddleware and MetaRefreshMiddleware) and the HttpProxyMiddleware middleware with custom ones that implement the fix from Scrapy 2.11.2, and verify that they work as intended.
References
This security issue was reported by @redapple at https://github.com/scrapy/scrapy/issues/767.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | scrapy | < 2.11.2 | 2.11.2 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Debilidad (CWE)
-- Plataforma
- Python (PyPI)
- Paquete
scrapy- Publicada
- 14.05.2024
- Actualizado
- 11.10.2026 12:18
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-jm3v-qxmh-hxwv - CC BY 4.0
Historial de vulnerabilidades: scrapy
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
- 14
- Primera → última
- 09.2017 09.2026
- Sin corrección
- 1
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 6
- Media 8
Divulgaciones por año
- 2017: 1
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 1
- 2022: 3
- 2023: 0
- 2024: 6
- 2025: 1
- 2026: 2
-
Scrapy's redirects ignoring scheme-specific proxy settings esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.