{"id":"CVE-2026-110636","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-110636","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…","details":"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 shell metacharacters interpreted by subprocess.Popen with shell=True to execute OS commands as the Python process.","published":"2026-10-14T15:17:16.710","modified":"2026-10-14T15:17:16.710","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/revolunet/pypdftk/pull/57","label":"revolunet/pypdftk#57"},"references":[{"type":"WEB","url":"https://github.com/revolunet/pypdftk"},{"type":"WEB","url":"https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123"},{"type":"WEB","url":"https://github.com/revolunet/pypdftk/issues/56"},{"type":"WEB","url":"https://github.com/revolunet/pypdftk/pull/57"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-paths"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-14T15:17:16.710"}}