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Advisory record · GHSA-xm59-rqc7-hhvf

nbconvert has an uncontrolled search path that leads to unauthorized code execution on Windows

CVSS 8.5 HighEPSS 0.0026 · 17th percentile

Published by the GitHub Advisory Database at 18 Dec 2025, 22:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
nbconvertPyPI<7.17.07.17.0
Identifiers
GHSA-xm59-rqc7-hhvf · CVE-2025-53000 · PYSEC-2026-1691
Weakness (CWE)
CWE-427
Tags
Published
18 Dec 2025
Updated
10 Sept 2026

Machine-written summary

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

Versions of nbconvert before 7.17.0 on Windows are affected. When a notebook with SVG output is converted to PDF from a directory containing a malicious inkscape.bat file, nbconvert runs that file because it searches the current directory for inkscape. An attacker who can place such a file in the directory where a user runs the conversion can execute arbitrary code. Upgrade to nbconvert 7.17.0 or later.

Written 5 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
8.5 High 4.0 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0026, the 17th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:34 UTC First seen by agentprime
  2. 31 Oct 2026, 14:34 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.