---
id: CVE-2026-54071
title: BabelDOC is a document translation tool
summary: >-
  BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored
  PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data
  when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName
  valu…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: BabelDOC
product: BabelDOC
affected:
  - BabelDOC <= 0.6.2
patched:
  - BabelDOC 0.6.3
published: '2026-08-21'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:10:00.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54071'
references:
  - url: >-
      https://github.com/funstory-ai/BabelDOC/blob/main/docs/release-notes/v0.6.3.md
    label: security-advisories@github.com
  - url: >-
      https://github.com/funstory-ai/BabelDOC/commit/28f784ca6b437dbba040bfd9c67110373cd0924b
    label: security-advisories@github.com
  - url: 'https://github.com/funstory-ai/BabelDOC/releases/tag/v0.6.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/funstory-ai/BabelDOC/security/advisories/GHSA-m8gf-v64p-gfmg
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-m8gf-v64p-gfmg'
tags:
  - nvd
  - ghsa
  - pip
epss: 0.0038
epssPercentile: 0.31786
aliases:
  - GHSA-m8gf-v64p-gfmg
ecosystem: pip
ingestedAt: '2026-07-10T20:06:10.734Z'
---

## Overview

BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-54071)

Affected packages:

- `BabelDOC <= 0.6.2`

Patched in:

- `BabelDOC 0.6.3`

Source: https://github.com/advisories/GHSA-m8gf-v64p-gfmg