CVE-2026-44019: Docling Core Insufficient Validation Of Image Reference Vulnerability

HIGH
Advisory Identifier: GHSA-j5xp-7m2f-49jv
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CVSS 8.1
CWE-400 CWE-73
Published
Advisory Summary

CVE-2026-44019 is a HIGH (CVSS 8.1) insufficient validation of image reference vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Docling Core libraries in the PyPI ecosystem. The issue involves insufficient validation of image reference uris. Remediation is available by upgrading affected packages to version 2.74.1.

CVE-2026-44019 at a Glance

CVE Identifier CVE-2026-44019
GHSA Identifier GHSA-j5xp-7m2f-49jv
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-400: Uncontrolled Resource Consumption
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:L/PR:N/UI:R/S:U/C:H/I:N/A:H).

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

How to Fix CVE-2026-44019

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: 2.74.1 
pip install docling-core>=2.74.1
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-2026-44019, 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 2.74.1), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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 In versions `>= 2.5.0, < 2.74.1`, `docling-core` could allow local `file://` image references and accepted inline `data:` content without a decoded-size limit. In applications that accept untrusted image references, this may allow access to local files readable by the process or excessive memory use from large inline payloads. ### Patches Patched in `docling-core` `2.74.1`. The fix blocks local file URIs by default and adds a size limit for decoded inline image data. Users should upgrade to: - `docling-core` `>= 2.74.1` ### Workarounds If upgrading is not immediately possible: - reject `file:` and `data:` image references from untrusted input - allow only approved local or remote image sources - apply input size and memory limits to processing workers ### References - Fix release: [`v2.74.1`](https://github.com/docling-project/docling-core/releases/tag/v2.74.1)

CVE-2026-44019 Affected Docling Core Versions

1 component(s)
Fixed Versions:
2.74.1
Product / Package Ecosystem Affected Versions Fixed Version
docling-core
pypi/docling-core
PyPI
≥ 2.5.0
< 2.74.1
2.74.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/docling-project/docling-core/security/advisories/GHSA-j5xp-7m2f-49jv
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/v2.74.1

Frequently Asked Questions

What is CVE-2026-44019?
CVE-2026-44019 is a security vulnerability in Docling Core involving Insufficient validation of image reference URIs under CWE-400: Uncontrolled Resource Consumption.
Which Docling Core versions are affected?
Affected versions include releases prior to 2.74.1 across affected packages: docling-core.
What version fixes CVE-2026-44019?
Upgrading to 2.74.1 (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 2.74.1. Upgrade your dependency to 2.74.1 or later.
What is the CVSS score of CVE-2026-44019?
CVE-2026-44019 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-44019?
CVE-2026-44019 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2026-44019?
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-j5xp-7m2f-49jv",
  "modified" : "2026-06-03T21:15:31Z",
  "published" : "2026-06-03T21:15:31Z",
  "aliases" : [ "CVE-2026-44019" ],
  "summary" : "Docling Core: Insufficient validation of image reference URIs",
  "details" : "### Impact\nIn versions `>= 2.5.0, < 2.74.1`, `docling-core`  could allow local `file://` image references and accepted inline `data:` content without a decoded-size limit.\n\nIn applications that accept untrusted image references, this may allow access to local files readable by the process or excessive memory use from large inline payloads.\n\n### Patches\nPatched in `docling-core` `2.74.1`.\nThe fix blocks local file URIs by default and adds a size limit for decoded inline image data.\n\nUsers should upgrade to:\n- `docling-core` `>= 2.74.1`\n\n### Workarounds\nIf upgrading is not immediately possible:\n- reject `file:` and `data:` image references from untrusted input\n- allow only approved local or remote image sources\n- apply input size and memory limits to processing workers\n\n### References\n- Fix release: [`v2.74.1`](https://github.com/docling-project/docling-core/releases/tag/v2.74.1)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "docling-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.5.0"
      }, {
        "fixed" : "2.74.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/security/advisories/GHSA-j5xp-7m2f-49jv"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/docling-project/docling-core"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docling-project/docling-core/releases/tag/v2.74.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-73" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-03T21:15:31Z",
    "nvd_published_at" : null
  }
}