Bug 2546154 (CVE-2026-105742)

Summary:	CVE-2026-105742 docling: docling: Information disclosure via cross-origin header leakage during remote image fetching
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. This vulnerability can lead to information disclosure of sensitive credentials, such as API keys and session tokens. When remote image fetching is enabled, the HTML image loader fails to restrict custom request headers to the document's original domain. A remote attacker can exploit this issue by supplying an untrusted document that references external images or cross-origin redirects, causing the application to transmit configured authentication credentials to an attacker-controlled server.	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 21:31:22 UTC

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.95.0 until 2.132.0, the HTML image resource loader in docling/backend/utils/image_resource_loader.py forwards headers configured through the HTMLBackendOptions.headers setting to every remote image URL named by an untrusted document when enable_remote_fetch=True and fetch_images=True. The loader does not restrict those credentials to the source document's origin, allowing requests that carry custom headers such as API keys and cookies to follow cross-origin redirects and expose the caller's configured credentials to a document author. The default configuration is not affected because remote fetching and configured headers are required. This issue is fixed in 2.132.0.