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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-82035

PyMuPDF 1.28.2 Path Traversal via extract_objects() Font Branch

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Status
Published
Published
Updated
Assigning organization
VulnCheck

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

PyMuPDF PyMuPDF

Default version status: unaffected

  • 0 to ≤ 1.8.2affected
  • b2c8f3a859fed35c379a44df566f770dc3e18605unaffected
pkg:github/pymupdf/PyMuPDF

References