Vulnerability-Lookup

CVE-2026-44020 (GCVE-0-2026-44020)

Vulnerability from cvelistv5 – Published: 2026-06-24 17:45 – Updated: 2026-06-30 12:08

Title

Docling: Unsafe XML Entity Expansion in USPTO Patent Backend

Summary

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.13.0 until 2.74.0, the USPTO patent XML parser used the standard xml.sax.parseString() without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could read arbitrary files from the server filesystem, perform Server-Side Request Forgery (SSRF) attacks, or cause denial of service through entity expansion (Billion Laughs attack). The vulnerability affects three USPTO patent format parsers: ICE (v4.x), Grant v2.5, and Application v1.x. This vulnerability is fixed in 2.74.0.

Severity

7.5 (High)


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

9.4 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CWE-611 - Improper Restriction of XML External Entity Reference

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/docling-project/docling/securi…	x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-44020	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492456	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

2 products

Vendor	Product	Version
docling-project	docling	Affected: >= 2.13.0, < 2.74.0
Red Hat	Red Hat OpenShift AI (RHOAI)	cpe:/a:redhat:openshift_ai

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-44020

Vulnerability from fkie_nvd - Published: 2026-06-24 18:17 - Updated: 2026-06-30 03:19

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.4 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/docling-project/docling/security/advisories/GHSA-m88r-rg27-5xfg	Mitigation, Patch, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-44020
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2492456
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44020.json

Impacted products

	Vendor	Product	Version
	docling	docling	*

JSON

To clipboard

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          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.5,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44020",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-25T17:07:45.571326Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-24T18:17:17.467",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/docling-project/docling/security/advisories/GHSA-m88r-rg27-5xfg"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-44020"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492456"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44020.json"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-776"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-611"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-M88R-RG27-5XFG

Vulnerability from github – Published: 2026-06-03 21:14 – Updated: 2026-06-03 21:14

Summary

Docling: Unsafe XML Entity Expansion in USPTO Patent Backend

Details

Impact

The USPTO patent XML parser used the standard xml.sax.parseString() without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could: - Read arbitrary files from the server filesystem - Perform Server-Side Request Forgery (SSRF) attacks - Cause denial of service through entity expansion (Billion Laughs attack)

The vulnerability affects three USPTO patent format parsers: ICE (v4.x), Grant v2.5, and Application v1.x.

Patches

Fixed in version 2.74.0. The parser now uses defusedxml.sax.make_parser() with secure configuration that blocks external entity resolution (feature_external_ges=False, feature_external_pes=False) while allowing DTD declarations required by USPTO files. This prevents XXE attacks while maintaining compatibility with the USPTO XML format.

Workarounds

Avoid processing USPTO patent XML files from untrusted sources. Implement resource limits (memory, CPU time) when processing patent documents.

References

Fix release: v2.74.0

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "docling"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.13.0"
            },
            {
              "fixed": "2.74.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44020"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-776"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-03T21:14:15Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nThe USPTO patent XML parser used the standard `xml.sax.parseString()` without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could:\n- Read arbitrary files from the server filesystem\n- Perform Server-Side Request Forgery (SSRF) attacks\n- Cause denial of service through entity expansion (Billion Laughs attack)\n\nThe vulnerability affects three USPTO patent format parsers: ICE (v4.x), Grant v2.5, and Application v1.x.\n\n### Patches\nFixed in version 2.74.0. The parser now uses `defusedxml.sax.make_parser()` with secure configuration that blocks external entity resolution (`feature_external_ges=False`, `feature_external_pes=False`) while allowing DTD declarations required by USPTO files. This prevents XXE attacks while maintaining compatibility with the USPTO XML format.\n\n### Workarounds\nAvoid processing USPTO patent XML files from untrusted sources. Implement resource limits (memory, CPU time) when processing patent documents.\n\n### References\n- Fix release: [v2.74.0](https://github.com/docling-project/docling/releases/tag/v2.74.0)",
  "id": "GHSA-m88r-rg27-5xfg",
  "modified": "2026-06-03T21:14:15Z",
  "published": "2026-06-03T21:14:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/docling-project/docling/security/advisories/GHSA-m88r-rg27-5xfg"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/docling-project/docling"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docling-project/docling/releases/tag/v2.74.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Docling: Unsafe XML Entity Expansion in USPTO Patent Backend"
}

PYSEC-2026-240

Vulnerability from pysec - Published: 2026-06-24 18:17 - Updated: 2026-06-27 10:28

Details

Severity

7.5 (High)


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

Impacted products

Name	purl
docling	pkg:pypi/docling

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "docling",
        "purl": "pkg:pypi/docling"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.13.0"
            },
            {
              "fixed": "2.74.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.13.0",
        "2.14.0",
        "2.15.0",
        "2.15.1",
        "2.16.0",
        "2.17.0",
        "2.18.0",
        "2.19.0",
        "2.20.0",
        "2.21.0",
        "2.22.0",
        "2.23.0",
        "2.23.1",
        "2.24.0",
        "2.25.0",
        "2.25.1",
        "2.25.2",
        "2.26.0",
        "2.27.0",
        "2.28.0",
        "2.28.1",
        "2.28.2",
        "2.28.3",
        "2.28.4",
        "2.29.0",
        "2.30.0",
        "2.31.0",
        "2.31.1",
        "2.31.2",
        "2.32.0",
        "2.33.0",
        "2.34.0",
        "2.35.0",
        "2.36.0",
        "2.36.1",
        "2.37.0",
        "2.38.0",
        "2.38.1",
        "2.39.0",
        "2.40.0",
        "2.41.0",
        "2.42.0",
        "2.42.1",
        "2.42.2",
        "2.43.0",
        "2.44.0",
        "2.45.0",
        "2.46.0",
        "2.47.0",
        "2.47.1",
        "2.48.0",
        "2.49.0",
        "2.50.0",
        "2.51.0",
        "2.52.0",
        "2.53.0",
        "2.54.0",
        "2.55.0",
        "2.55.1",
        "2.56.0",
        "2.56.1",
        "2.57.0",
        "2.58.0",
        "2.59.0",
        "2.60.0",
        "2.60.1",
        "2.61.0",
        "2.61.1",
        "2.61.2",
        "2.62.0",
        "2.63.0",
        "2.64.0",
        "2.64.1",
        "2.65.0",
        "2.66.0",
        "2.67.0",
        "2.68.0",
        "2.69.0",
        "2.69.1",
        "2.70.0",
        "2.71.0",
        "2.72.0",
        "2.73.0",
        "2.73.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44020",
    "GHSA-m88r-rg27-5xfg"
  ],
  "details": "Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.13.0 until 2.74.0, the USPTO patent XML parser used the standard xml.sax.parseString() without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could read arbitrary files from the server filesystem, perform Server-Side Request Forgery (SSRF) attacks, or cause denial of service through entity expansion (Billion Laughs attack). The vulnerability affects three USPTO patent format parsers: ICE (v4.x), Grant v2.5, and Application v1.x. This vulnerability is fixed in 2.74.0.",
  "id": "PYSEC-2026-240",
  "modified": "2026-06-27T10:28:35.752410Z",
  "published": "2026-06-24T18:17:17.467Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/docling-project/docling/security/advisories/GHSA-m88r-rg27-5xfg"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-44020 (GCVE-0-2026-44020)

FKIE_CVE-2026-44020

GHSA-M88R-RG27-5XFG

Impact

Patches

Workarounds

References

PYSEC-2026-240

Tags

Sightings

Nomenclature