Scrapy: Arbitrary Module Import via Referrer-Policy Header in RefererMiddleware

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105782
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 00:16:33 UTC
Updated2026-10-06 00:16:33 UTC
DescriptionScrapy is a high-level web crawling and scraping framework for Python. From 1.4.0 until 2.14.2, RefererMiddleware in scrapy/spidermiddlewares/referer.py treated a Referrer-Policy response-header value that resembled a Python import path as a referrer policy class, imported the referenced object, and called it. A malicious website could supply a callable such as sys.exit and terminate a crawler processing the response. This issue is fixed in version 2.14.2.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-470 | CWE-470 CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Scrapy Scrapy affected >= 1.4.0, < 2.14.2 Not specified

References

ReferenceSourceLinkTags
github.com/scrapy/scrapy/commit/b6e5c58ae707a3d4bb491537b5519534050047e0 [email protected] github.com
github.com/scrapy/scrapy/security/advisories/GHSA-cwxj-rr6w-m6w7 [email protected] github.com
github.com/scrapy/scrapy/releases/tag/2.14.2 [email protected] github.com
github.com/scrapy/scrapy/commit/945b787a263586cb5803c01c6da57daad8997ae5 [email protected] github.com
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