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CVE-2026-105749— Docling: Unbounded table rowspan/colspan in HTML, JATS, ODS and BoxNote backends causes CPU/memory exhaustion

Quick assessment

Affected
docling-project docling
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Docling 通过解析多种文档格式并提供与生成式人工智能生态系统的集成，简化了文档处理流程。在版本 2.0.0 至 2.131.0 之间，HTML、JATS、OpenDocument 电子表格以及 BoxNote 后端（包括 docling/backend/html_backend.py、docling/backend/jats_backend.py 和 docling/backend/boxnote_backend.py）接受未设置上限的 rowspan 和 colspan 属性值，并根据声明的跨度执行循环或分

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-105749

Vulnerability Information
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Vulnerability Title
Docling: Unbounded table rowspan/colspan in HTML, JATS, ODS and BoxNote backends causes CPU/memory exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.0.0 until 2.131.0, the HTML, JATS, OpenDocument spreadsheet, and BoxNote backends, including docling/backend/html_backend.py, docling/backend/jats_backend.py, and docling/backend/boxnote_backend.py, accept the rowspan and colspan attribute values without an upper bound and execute loops or allocate a table grid proportional to the declared span. A very small document can therefore cause sustained CPU use or multi-gigabyte memory allocation, and the document_timeout setting does not interrupt the single backend conversion call. Export through the TableData.grid property can further materialize the oversized grid. This issue is fixed in 2.131.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
docling-project docling >= 2.0.0, < 2.131.0 -
docling-project docling-slim >= 2.92.0, < 2.131.0 -

II. Public POCs for CVE-2026-105749

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III. Intelligence Information for CVE-2026-105749

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Other References for CVE-2026-105749 (4)

Same Patch Batch · docling-project · 2026-10-05 · 10 CVEs total

CVE-2026-105744 7.5 HIGH Docling: Arbitrary file read/write (and command execution when shell-escape is enabled) wh
CVE-2026-105751 6.9 MEDIUM Docling: Arbitrary local file read via draw:image xlink:href in the OpenDocument backend
CVE-2026-105745 6.7 MEDIUM Docling: Plugin entry points are imported before the allow_external_plugins check
CVE-2026-105750 5.9 MEDIUM Docling: `enable_local_fetch` is not enforced in HTML browser-rendering mode
CVE-2026-105748 4.3 MEDIUM Docling: Crafted DoclingDocument JSON embeds local image files into converted output
CVE-2026-105747 4.3 MEDIUM Docling: METS-GBS archive member limit enforced after full member enumeration (memory exha
CVE-2026-105743 4.0 MEDIUM Docling: SSRF guard bypass in remote resource fetching (DNS rebinding / multi-record resol
CVE-2026-105742 3.7 LOW Docling: Configured HTTP headers sent to every remote image host named by a document
CVE-2026-105746 2.2 LOW Docling: KServe v2 OCR engine does not enforce enable_remote_services

IV. Related Vulnerabilities

Same product: docling
Same vendor: docling-project
Same weakness: CWE-400

V. Comments for CVE-2026-105749

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