CVE-2026-31248_CVE-2026-31248

7.5 / 10

HIGH

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

Description

Docling's METS GBS backend is vulnerable to XML Entity Expansion (XXE) attacks thru 2.61.0. The backend extracts and validates XML files from .tar.gz archives using etree.fromstring() without disabling entity resolution. An attacker can craft a malicious XML file with nested entity definitions (XML Bomb) and package it into a .tar.gz archive. When processed by Docling, the exponential expansion of entities during XML parsing leads to excessive resource consumption, resulting in a denial of service (DoS) condition on the system running the Docling parser.

Basic Information

ID CVE-2026-31248

Source mitre

Published May 11, 2026 at 00:00

Modified May 12, 2026 at 18:44

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-776

References

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    "published": "2026-05-11T00:00:00.000Z",
    "modified": "2026-05-12T18:44:28.080Z",
    "type": "cve",
    "title": "CVE-2026-31248",
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    "references": "https://github.com/docling-project/docling\nhttps://www.notion.so/CVE-2026-31248-35d1e1393188818585b2ce3b9ce24686",
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