# CVE-2026-82035

## Summary

- **CVE ID:** CVE-2026-82035
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-22
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

PyMuPDF through 1.28.2, fixed in commit b2c8f3a, contains a path traversal vulnerability in the font branch of extract_objects() in src/__main__.py, where the output filename is constructed by joining a document-controlled BaseFont name directly onto the user-supplied output directory without stripping path separators or dot-dot sequences. Attackers can supply a crafted PDF, EPUB, XPS, or FB2 file with a BaseFont name containing encoded path separators that decode to ../ sequences or absolute paths, causing arbitrary file writes outside the intended output directory without requiring authentication or elevated privileges.

## Affected Products

- PyMuPDF — PyMuPDF (0)
- PyMuPDF — PyMuPDF (b2c8f3a859fed35c379a44df566f770dc3e18605)

## References

- [CNA](https://github.com/pymupdf/PyMuPDF/commit/b2c8f3a859fed35c379a44df566f770dc3e18605)
- [CNA](https://www.vulncheck.com/advisories/pymupdf-path-traversal-via-extract-objects-font-branch)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.32%
- **EPSS Percentile:** 24.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._