Docling Core vulnerable to Remote Code Execution via unsafe PyYAML usage

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Summary

CVECVE-2026-24009
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-22 16:16:09 UTC
Updated2026-04-09 14:25:51 UTC
DescriptionDocling Core (or docling-core) is a library that defines core data types and transformations in the document processing application Docling. A PyYAML-related Remote Code Execution (RCE) vulnerability, namely CVE-2020-14343, is exposed in docling-core starting in version 2.21.0 and prior to version 2.48.4, specifically only if the application uses pyyaml prior to version 5.4 and invokes `docling_core.types.doc.DoclingDocument.load_from_yaml()` passing it untrusted YAML data. The vulnerability has been patched in docling-core version 2.48.4. The fix mitigates the issue by switching `PyYAML` deserialization from `yaml.FullLoader` to `yaml.SafeLoader`, ensuring that untrusted data cannot trigger code execution. Users who cannot immediately upgrade docling-core can alternatively ensure that the installed version of PyYAML is 5.4 or greater.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002850000 probability, percentile 0.520650000 (date 2026-04-15)

Problem Types: CWE-502 | CWE-502 CWE-502: Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Docling Docling-core All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Docling-project Docling-core affected >= 2.21.0, < 2.48.4 Not specified

References

ReferenceSourceLinkTags
github.com/docling-project/docling-core/security/advisories/GHSA-vqxf-v2... [email protected] github.com Mitigation, Patch, Vendor Advisory
github.com/docling-project/docling-core/releases/tag/v2.48.4 [email protected] github.com Product, Release Notes
github.com/docling-project/docling-core/commit/3e8d628eeeae50f0f8f239c8c... [email protected] github.com Patch
github.com/docling-project/docling-core/issues/482 [email protected] github.com Issue Tracking
github.com/advisories/GHSA-8q59-q68h-6hv4 [email protected] github.com Not Applicable
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