{"id":"CVE-2026-82035","title":"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 …","summary":"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 …","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L","cwe":["CWE-22"],"vendor":"PyMuPDF","product":"PyMuPDF","affected":["PyMuPDF <= 1.8.2"],"published":"2026-09-14","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:44:42.207","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82035","references":[{"url":"https://github.com/pymupdf/PyMuPDF/commit/b2c8f3a859fed35c379a44df566f770dc3e18605","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pymupdf-path-traversal-via-extract-objects-font-branch","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82035.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-82035"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533285"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-82035"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82035"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00509,"epssPercentile":0.40876,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-14T19:11:47.649926Z"},"ingestedAt":"2026-09-14T19:13:23.470Z","slug":"CVE-2026-82035","body":"## Overview\n\nPyMuPDF 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux AI (RHEL AI) 3 · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82035.json)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}