Bug 2546155 (CVE-2026-105743)

Summary:	CVE-2026-105743 docling: docling: Server-Side Request Forgery via improper URL validation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ebourniv, hasun, nyancey, ptisnovs, sbunciak
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in docling. A remote attacker can exploit a Server-Side Request Forgery (SSRF) vulnerability by providing crafted URLs when remote resource fetching is enabled. Incomplete validation allows requests to be resolved again by the network client, enabling techniques such as Domain Name System (DNS) rebinding or parser confusion to bypass internal address restrictions. Consequently, the application may send unauthorized requests to internal network services, potentially exposing sensitive data when responses are rendered.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-05 21:31:31 UTC

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.91.0 until 2.132.0, validate_url_safety in docling/backend/utils/image_resource_loader.py validates a hostname with a single IPv4 lookup and then allows the HTTP client to resolve and parse the original URL again, permitting DNS rebinding, mixed public and internal address records, and backslash authority parser disagreement to reach internal services. HTMLBackendOptions(render_page=True) also allows HTTP and HTTPS browser requests without validating their resolved destination. Exploitation requires remote fetching to be enabled, and response content is exposed only when it is decoded as an image or passively rendered in a page screenshot. This issue is fixed in 2.132.0.