HIGH

CVE-2026-82035

2026-09-14 CVSS v3.1

CVSS

7.1

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.

Weakness (CWE)

CWE-22 Path Traversal

EPSS Score

0.32%

Probability of exploitation in next 30 days

24.7th percentile

References

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

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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