CVE-2026-105743 (GCVE-0-2026-105743)

Vulnerability from cvelistv5 – Published: 2026-10-05 21:23 – Updated: 2026-10-05 21:23
VLAI
Title
Docling: SSRF guard bypass in remote resource fetching (DNS rebinding / multi-record resolution; no IP validation in HTML render mode)
Summary
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.91.0 until 2.132.0, validate_url_safety in docling/backend/utils/image_resource_loader.py validates a hostname with a single IPv4 lookup and then allows the HTTP client to resolve and parse the original URL again, permitting DNS rebinding, mixed public and internal address records, and backslash authority parser disagreement to reach internal services. HTMLBackendOptions(render_page=True) also allows HTTP and HTTPS browser requests without validating their resolved destination. Exploitation requires remote fetching to be enabled, and response content is exposed only when it is decoded as an image or passively rendered in a page screenshot. This issue is fixed in 2.132.0.
Severity
4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version CPE status
docling-project docling Affected: >= 2.91.0, < 2.132.0
guessed Create a notification for this product.
docling-project docling-slim Affected: >= 2.91.0, < 2.132.0
guessed Create a notification for this product.
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{
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        }
      ],
      "metrics": [
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            "baseScore": 4,
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            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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        },
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          "name": "https://github.com/docling-project/docling/commit/5e469137f275ffc443306a30d12a3a45bceb80fb",
          "tags": [
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      "source": {
        "advisory": "GHSA-pc36-qwjq-x68c",
        "discovery": "UNKNOWN"
      },
      "title": "Docling: SSRF guard bypass in remote resource fetching (DNS rebinding / multi-record resolution; no IP validation in HTML render mode)"
    }
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  "cveMetadata": {
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    "datePublished": "2026-10-05T21:23:45.527Z",
    "dateReserved": "2026-10-05T19:11:07.946Z",
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    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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          }
        ],
        "id": "CVE-2026-105743",
        "lastModified": "2026-10-06T14:59:48.280",
        "metrics": {
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              "cvssData": {
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          }
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      "aggregate_severity": "Low",
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      "cve": "CVE-2026-105743",
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      "initial_release_date": "2026-10-05T21:23:45.527000+00:00",
      "product_status:known_affected": "7",
      "source": "Red Hat CSAF VEX",
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      "title": "docling: docling: Server-Side Request Forgery via improper URL validation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105743.json",
      "version": "3"
    }
  }
}



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