CVE-2026-105747 (GCVE-0-2026-105747)

Vulnerability from cvelistv5 – Published: 2026-10-05 21:32 – Updated: 2026-10-05 21:32
VLAI
Title
Docling: METS-GBS archive member limit enforced after full member enumeration (memory exhaustion during format detection)
Summary
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.45.0 until 2.131.0, METS-GBS format detection in docling/datamodel/document.py and the backend in docling/backend/mets_gbs_backend.py call tarfile.TarFile.getmembers() before enforcing the max_member_count limit, causing the full archive member list to be allocated before the limit can stop processing. A small gzip-compressed tar archive with a very large number of empty members can therefore consume memory proportional to the declared member count, including during format detection before the allowed_formats restriction is applied. This issue is a residual weakness in the member-count protection added for CVE-2026-44018. This issue is fixed in 2.131.0.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version CPE status
docling-project docling Affected: >= 2.45.0, < 2.131.0
guessed Create a notification for this product.
docling-project docling-slim Affected: >= 2.45.0, < 2.131.0
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "docling",
          "vendor": "docling-project",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.45.0, \u003c 2.131.0"
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        },
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            {
              "status": "affected",
              "version": "\u003e= 2.45.0, \u003c 2.131.0"
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          "value": "Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.45.0 until 2.131.0, METS-GBS format detection in docling/datamodel/document.py and the backend in docling/backend/mets_gbs_backend.py call tarfile.TarFile.getmembers() before enforcing the max_member_count limit, causing the full archive member list to be allocated before the limit can stop processing. A small gzip-compressed tar archive with a very large number of empty members can therefore consume memory proportional to the declared member count, including during format detection before the allowed_formats restriction is applied. This issue is a residual weakness in the member-count protection added for CVE-2026-44018. This issue is fixed in 2.131.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
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            }
          ]
        },
        {
          "descriptions": [
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-05T21:32:34.438Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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          "tags": [
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          ],
          "url": "https://github.com/docling-project/docling/security/advisories/GHSA-3cr3-8m4c-fpxw"
        },
        {
          "name": "https://github.com/docling-project/docling/pull/4412",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/docling-project/docling/pull/4412"
        },
        {
          "name": "https://github.com/docling-project/docling/commit/ebae65cd71c37c88b36185b406a449b92d8f7ffa",
          "tags": [
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          "tags": [
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          "url": "https://github.com/docling-project/docling/releases/tag/v2.131.0"
        }
      ],
      "source": {
        "advisory": "GHSA-3cr3-8m4c-fpxw",
        "discovery": "UNKNOWN"
      },
      "title": "Docling: METS-GBS archive member limit enforced after full member enumeration (memory exhaustion during format detection)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105747",
    "datePublished": "2026-10-05T21:32:34.438Z",
    "dateReserved": "2026-10-05T19:11:07.947Z",
    "dateUpdated": "2026-10-05T21:32:34.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
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                "vendor": "docling-project",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 2.45.0, \u003c 2.131.0"
                  }
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              },
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                "product": "docling-slim",
                "vendor": "docling-project",
                "versions": [
                  {
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                    "version": "\u003e= 2.45.0, \u003c 2.131.0"
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                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.45.0 until 2.131.0, METS-GBS format detection in docling/datamodel/document.py and the backend in docling/backend/mets_gbs_backend.py call tarfile.TarFile.getmembers() before enforcing the max_member_count limit, causing the full archive member list to be allocated before the limit can stop processing. A small gzip-compressed tar archive with a very large number of empty members can therefore consume memory proportional to the declared member count, including during format detection before the allowed_formats restriction is applied. This issue is a residual weakness in the member-count protection added for CVE-2026-44018. This issue is fixed in 2.131.0."
          }
        ],
        "id": "CVE-2026-105747",
        "lastModified": "2026-10-05T22:16:57.633",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
                "version": "3.1"
              },
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              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
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        },
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        "references": [
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          },
          {
            "source": "security-advisories@github.com",
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          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-409"
              },
              {
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                "value": "CWE-770"
              }
            ],
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            "type": "Primary"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-06T00:10:37+00:00",
      "cve": "CVE-2026-105747",
      "id": "CVE-2026-105747",
      "initial_release_date": "2026-10-05T21:32:34.438000+00:00",
      "product_status:known_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "docling: docling: Denial of Service via excessive memory allocation in archive processing",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105747.json",
      "version": "3"
    }
  }
}



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