CVE-2026-105748

Docling: Crafted DoclingDocument JSON embeds local image files into converted output

MEDIUM
4.3
CVSS Score
Published: October 5, 2026 at 09:34 PM UTC
Updated: October 7, 2026 at 06:47 PM UTC
1 product affected across 1 vendorDocling

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.16.0 until 2.131.0, the InputFormat.JSON_DOCLING backend in docling/backend/json/docling_json_backend.py validates serialized DoclingDocument input without rejecting picture image references that contain local paths or file URIs. When the document is enriched or exported with ImageRefMode.EMBEDDED, the DoclingDocument._with_embedded_pictures and ImageRef.pil_image methods can open those references and place readable image bytes in Markdown or HTML output. Disclosure is limited to files Pillow can decode as images, while differing decode behavior can also reveal whether a path exists. Direct untrusted loading through docling-core is outside this Docling fix. This issue is fixed in 2.131.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.16.0 ≤ v < 2.131.0

References (4)

x_refsource_CONFIRMExploitPatchVendor Advisory
Source: cverecord
https://github.com/docling-project/docling/security/advisories/GHSA-p944-4xh2-x776
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/docling-project/docling/pull/4417
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/docling-project/docling/releases/tag/v2.131.0

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-73CWE-200

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