Python2.7: Prior to 2.17.0, in scrapy/core/downloader/handlers/s3.py, Scrapy's S3DownloadHandler converts an S3-scheme bucket and key request into a plaintext… (CVE-2026-84366)
Description
Scrapy's S3DownloadHandler sends signed AWS S3 requests over plaintext HTTP by default unless explicitly configured otherwise. This causes sensitive AWS authorization headers and S3 object data to be transmitted unencrypted, exposing them to network attackers who can intercept or modify the traffic. The vulnerability affects Scrapy versions before 2.17. A fix is available.
CVSS v3.1
Score 7.4high
Affected software
pkg:deb/ubuntu/python2.7?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/python3.4?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/python3.5?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/python2.7?arch=source&distro=esm-infra-legacy/xenialpkg:deb/ubuntu/python3.5?arch=source&distro=esm-infra-legacy/xenialpkg:deb/ubuntu/python2.7?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/python3.6?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/python3.7?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/python3.8?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/python3.8?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/python2.7?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/python3.9?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/python3.10?arch=source&distro=jammypkg:deb/ubuntu/python2.7?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/python3.11?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/python3.12?arch=source&distro=noblepkg:deb/ubuntu/python3.14?arch=source&distro=stonkingpkg:deb/ubuntu/python3.14?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-76g3-c3x4-crvx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84366"]
- Ecosystems
- ["PyPI"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a998f6bacd9273b49193581
Added to database: 09/03/2026, 15:16:59 UTC
Last enriched: 09/07/2026, 17:37:07 UTC
Last updated: 10/19/2026, 18:48:24 UTC
Views: 66
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