---
title: "CVE-2026-82035: PyMuPDF - Path Traversal"
description: "PyMuPDF <= 1.28.2 contains a path traversal vulnerability caused by improper sanitization of BaseFont names in extract_objects() font branch, letting attackers write arbitrary files outside the output directory, exploit requires crafted document input."
url: https://panop.io/threat-heartbeat/CVE-2026-82035/
---

# CVE-2026-82035 PyMuPDF - Path Traversal

PyMuPDF <= 1.28.2 contains a path traversal vulnerability caused by improper sanitization of BaseFont names in extract\_objects() font branch, letting attackers write arbitrary files outside the output directory, exploit requires crafted document input.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.32% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82035)

## Details

Type

Path Traversal

Impact

File System Write, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to a version including commit b2c8f3a or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82035](https://nvd.nist.gov/vuln/detail/CVE-2026-82035)
- [https://github.com/pymupdf/PyMuPDF/commit/b2c8f3a859fed35c379a44df566f770dc3e18605](https://github.com/pymupdf/PyMuPDF/commit/b2c8f3a859fed35c379a44df566f770dc3e18605)
- [https://www.vulncheck.com/advisories/pymupdf-path-traversal-via-extract-objects-font-branch](https://www.vulncheck.com/advisories/pymupdf-path-traversal-via-extract-objects-font-branch)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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