{"id":"CVE-2026-110636","title":"pypdftk through 0.5 contains an OS command injection vulnerability in fill_form(), dump_data_fields(), and pdftk_cmd_util() that builds shell commands from caller-supplied paths","summary":"pypdftk through 0.5 contains an OS command injection vulnerability in fill_form(), dump_data_fields(), and pdftk_cmd_util() that builds shell commands from caller-supplied paths. Attackers controlling pdf_path or out_file can inject shel…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T15:17:16.710","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110636","references":[{"url":"https://github.com/revolunet/pypdftk","label":"disclosure@vulncheck.com"},{"url":"https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123","label":"disclosure@vulncheck.com"},{"url":"https://github.com/revolunet/pypdftk/issues/56","label":"disclosure@vulncheck.com"},{"url":"https://github.com/revolunet/pypdftk/pull/57","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-paths","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-14T15:36:14.013Z","slug":"CVE-2026-110636","body":"## Overview\n\npypdftk through 0.5 contains an OS command injection vulnerability in fill_form(), dump_data_fields(), and pdftk_cmd_util() that builds shell commands from caller-supplied paths. Attackers controlling pdf_path or out_file can inject shell metacharacters interpreted by subprocess.Popen with shell=True to execute OS commands as the Python process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}