CVE-2026-105742 — Docling: Configured HTTP headers sent to every remote image host named by a document

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
docling-project / docling	affected >= 2.95.0, < 2.132.0
docling-project / docling-slim	affected >= 2.95.0, < 2.132.0

CWE

CWE-201, CWE-522

References

ADP enrichment

CISA-ADP

No English description supplied.

https://github.com/docling-project/docling/security/advisories/GHSA-p3fw-7699-7926