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Advisory record · GHSA-m8gf-v64p-gfmg

BabelDOC: Arbitrary Code Execution via CMap Pickle Deserialization in babeldoc/pdfminer/cmapdb.py

CVSS 7.8 HighEPSS 0.0038 · 32nd percentile

Published by the GitHub Advisory Database at 10 Jul 2026, 19:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
babeldocPyPI<0.6.30.6.3
Identifiers
GHSA-m8gf-v64p-gfmg · CVE-2026-54071 · PYSEC-2026-2389
Weakness (CWE)
CWE-502
Tags
Published
10 Jul 2026
Updated
13 Jul 2026

Machine-written summary

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

BabelDOC versions before 0.6.3 are vulnerable to arbitrary code execution when processing a crafted PDF. The CMap loader passes a PDF-controlled name to a file path and then unpickles the file, so an attacker who can write a pickle file to a predictable local path (such as /tmp) can get code run with the privileges of the BabelDOC process once a user processes the malicious PDF. Upgrade to babeldoc 0.6.3 or later.

Written 6 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

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:02 UTC First seen by agentprime
  2. 31 Oct 2026, 15:02 UTC Confirmed by OSV

Sources

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.