CVE-2026-24009: Docling core Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-vqxf-v2gg-x3hc
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CVSS 8.1
CWE-502
Published
Advisory Summary

CVE-2026-24009 is a HIGH (CVSS 8.1) remote code execution vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Docling core libraries in the PyPI ecosystem. The issue involves docling-core vulnerable to remote code execution via unsafe pyyaml usage. Remediation is available by upgrading affected packages to version 2.48.4.

CVE-2026-24009 at a Glance

CVE Identifier CVE-2026-24009
GHSA Identifier GHSA-vqxf-v2gg-x3hc
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Docling core
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-24009

To remediate this vulnerability, upgrade all affected Docling core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

docling-core fixed: 2.48.4 
pip install docling-core>=2.48.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show docling-core

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-24009, inspect your installed packages using pip:

pip show docling-core

Analyze the terminal output to locate any version of Docling core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.48.4), your application is affected.

Note: The pip show docling-core command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Docling core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact A PyYAML-related Remote Code Execution (RCE) vulnerability, namely CVE-2020-14343, is exposed in `docling-core >=2.21.0, <2.48.4` and, specifically only if the application uses `pyyaml < 5.4` and invokes `docling_core.types.doc.DoclingDocument.load_from_yaml()` passing it untrusted YAML data. ### Patches 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. ### Workarounds Users who cannot immediately upgrade `docling-core` can alternatively ensure that the installed version of `PyYAML` is **5.4 or greater**, which supposedly patches CVE-2020-14343. ### References * GitHub Issue: #482 * Upstream Advisory: CVE-2020-14343 * Fix Release: [v2.48.4](https://github.com/docling-project/docling-core/releases/tag/v2.48.4)

CVE-2026-24009 Affected Docling core Versions

1 component(s)
Fixed Versions:
2.48.4
Product / Package Ecosystem Affected Versions Fixed Version
docling-core
pypi/docling-core
PyPI
≥ 2.21.0
< 2.48.4
2.48.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/docling-project/docling-core/security/advisories/GHSA-vqxf-v2gg-x3hc
NVD — CVE-2026-24009 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24009
Docling core Source Repository REPOSITORY
https://github.com/docling-project/docling-core/issues/482
Security Fix Commit FIX COMMIT
https://github.com/docling-project/docling-core/commit/3e8d628eeeae50f0f8f239c8c7fea773d065d80c
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-8q59-q68h-6hv4
Docling core Source Repository REPOSITORY
https://github.com/docling-project/docling-core
Docling core Release RELEASE
https://github.com/docling-project/docling-core/releases/tag/v2.48.4

Frequently Asked Questions

What is CVE-2026-24009?
CVE-2026-24009 is a security vulnerability in Docling core involving docling-core vulnerable to Remote Code Execution via unsafe PyYAML usage under CWE-502: Deserialization of Untrusted Data.
Which Docling core versions are affected?
Affected versions include releases prior to 2.48.4 across affected packages: docling-core.
What version fixes CVE-2026-24009?
Upgrading to 2.48.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is docling-core affected?
Yes, docling-core is affected in releases prior to 2.48.4. Upgrade your dependency to 2.48.4 or later.
What is the CVSS score of CVE-2026-24009?
CVE-2026-24009 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-24009?
CVE-2026-24009 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check PyPI dependencies for CVE-2026-24009?
Run the dependency tree command: 'pip show docling-core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vqxf-v2gg-x3hc",
  "modified" : "2026-01-22T18:43:42Z",
  "published" : "2026-01-22T18:02:45Z",
  "aliases" : [ "CVE-2026-24009" ],
  "summary" : "docling-core vulnerable to Remote Code Execution via unsafe PyYAML usage",
  "details" : "### Impact\n\nA PyYAML-related Remote Code Execution (RCE) vulnerability, namely CVE-2020-14343, is exposed in `docling-core >=2.21.0, <2.48.4` and, specifically only if the application uses `pyyaml < 5.4` and invokes `docling_core.types.doc.DoclingDocument.load_from_yaml()` passing it untrusted YAML data.\n\n### Patches\n\nThe vulnerability has been patched in `docling-core` version **2.48.4**.\nThe fix mitigates the issue by switching `PyYAML` deserialization from `yaml.FullLoader` to `yaml.SafeLoader`, ensuring that untrusted data cannot trigger code execution.\n\n### Workarounds\n\nUsers who cannot immediately upgrade `docling-core` can alternatively ensure that the installed version of `PyYAML` is **5.4 or greater**, which supposedly patches CVE-2020-14343.\n\n### References\n\n* GitHub Issue: #482\n* Upstream Advisory: CVE-2020-14343\n* Fix Release: [v2.48.4](https://github.com/docling-project/docling-core/releases/tag/v2.48.4)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "docling-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.21.0"
      }, {
        "fixed" : "2.48.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/security/advisories/GHSA-vqxf-v2gg-x3hc"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24009"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/issues/482"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/commit/3e8d628eeeae50f0f8f239c8c7fea773d065d80c"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-8q59-q68h-6hv4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/docling-project/docling-core"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/releases/tag/v2.48.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-22T18:02:45Z",
    "nvd_published_at" : "2026-01-22T16:16:09Z"
  }
}