Description
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 products
docling: docling
References5
- github.com/docling-project/docling/security/advisories/GHSA-p3f… ExploitPatchVendor Advisory
- github.com/docling-project/docling/security/advisories/GHSA-p3f… ExploitPatchVendor Advisory
- github.com/docling-project/docling/commit/5e469137f275ffc443306… Patch
- github.com/docling-project/docling/pull/4420 Issue TrackingPatch
- github.com/docling-project/docling/releases/tag/v2.132.0 Release Notes
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 17 · as of 10 November 2026
- CWE
- CWE-201CWE-522
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