CVE-2026-82035

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-14 19:17

Updated : 2026-09-14 19:17

NVD link : CVE-2026-82035

Mitre link : CVE-2026-82035

CVE.ORG link : CVE-2026-82035

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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