{"id":"DEBIAN-CVE-2026-82035","details":"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.","modified":"2026-09-25T08:47:20.800466448Z","published":"2026-09-14T19:17:50.380Z","upstream":["CVE-2026-82035"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-82035"}],"affected":[{"package":{"name":"pymupdf","ecosystem":"Debian:12","purl":"pkg:deb/debian/pymupdf?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21.1+ds1-1","1.22.5+ds1-1","1.23.7+ds1-1","1.24.2+ds1-1","1.24.2+ds1-2","1.24.2+ds1-3","1.25.0+ds1-1","1.25.0+ds1-2","1.25.4+ds1-1","1.25.4+ds1-2","1.25.4+ds1-3","1.25.4+ds1-4","1.26.7+ds1-1","1.28.2+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82035.json"}},{"package":{"name":"pymupdf","ecosystem":"Debian:13","purl":"pkg:deb/debian/pymupdf?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.25.4+ds1-3","1.25.4+ds1-3+deb13u1","1.25.4+ds1-4","1.26.7+ds1-1","1.28.2+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82035.json"}},{"package":{"name":"pymupdf","ecosystem":"Debian:14","purl":"pkg:deb/debian/pymupdf?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.25.4+ds1-3","1.25.4+ds1-4","1.26.7+ds1-1","1.28.2+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82035.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L"}]}