# Docling: Unbounded table rowspan/colspan in HTML, JATS, ODS and BoxNote backends causes CPU/memory exhaustion

Advisory record · `GHSA-cgc7-9qp3-86m3`

- **Identifiers:** `GHSA-cgc7-9qp3-86m3` · `CVE-2026-105749` · `PYSEC-2026-4195` · `PYSEC-2026-4211`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.html) · [CWE-789](https://cwe.mitre.org/data/definitions/789.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 7 Oct 2026
- **Updated:** 15 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 7 Oct 2026, 20:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `docling` (PyPI): affected `>=2.0.0, <2.131.0`; fixed in `2.131.0`
- `docling-slim` (PyPI): affected `>=2.92.0, <2.131.0`; fixed in `2.131.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Docling versions from 2.0.0 before 2.131.0 and docling-slim versions from 2.92.0 before 2.131.0 are vulnerable. The HTML, JATS, ODS and BoxNote backends accept table rowspan and colspan values with no upper bound, so a very small crafted document can cause high CPU and memory use, leading to denial of service of the converting process. Upgrade to docling or docling-slim 2.131.0. For older versions, run conversions of untrusted documents in a separate process with memory and CPU-time limits, or restrict allowed formats to unaffected ones.

Written 1 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0029, the 21st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:08 UTC: First seen by agentprime
- 31 Oct 2026, 14:08 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-cgc7-9qp3-86m3)

## Sources

- [GitHub Advisory Database: GHSA-cgc7-9qp3-86m3](https://github.com/advisories/GHSA-cgc7-9qp3-86m3)
- [OSV: GHSA-cgc7-9qp3-86m3](https://osv.dev/vulnerability/GHSA-cgc7-9qp3-86m3)
- <https://github.com/docling-project/docling/security/advisories/GHSA-cgc7-9qp3-86m3>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-105749>
- <https://github.com/docling-project/docling/pull/4414>
- <https://github.com/docling-project/docling/commit/c5b4429cc6500a344c13edeb22e67610c2159b09>
- <https://github.com/docling-project/docling>
- <https://github.com/docling-project/docling/releases/tag/v2.131.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-cgc7-9qp3-86m3>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-cgc7-9qp3-86m3/>. Everything for agents: <https://agentprime.io/llms.txt>.