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High · 8.1 Public exploit CVE-2026-24009 EUVD-2026-3807GHSA-vqxf-v2gg-x3hcPYSEC-2026-1313

Docling Core vulnerable to Remote Code Execution via unsafe PyYAML usage

Published Jan 22, 2026 · Updated Jan 22, 2026 · Assigned by GitHub_M

Vendor: docling-project Product: docling-core Package: docling-core Ecosystem: PyPI

Description

Docling 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.

Affected products

VendorProductAffectedFixed
docling-project docling-core >= 2.21.0, < 2.48.4 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI docling-core >= 2.21.0, < 2.48.4 2.48.4 GHSA-vqxf-v2gg-x3hc

References