{"id":"CVE-2026-110636","summary":"pypdftk through 0.5 OS Command Injection via PDF and Output Paths","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.","modified":"2026-10-15T02:47:28.305884376Z","published":"2026-10-14T14:17:08.465Z","database_specific":{"cwe_ids":["CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110636.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110636.json"},{"type":"PACKAGE","url":"https://github.com/revolunet/pypdftk"},{"type":"ARTICLE","url":"https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123"},{"type":"REPORT","url":"https://github.com/revolunet/pypdftk/issues/56"},{"type":"FIX","url":"https://github.com/revolunet/pypdftk/pull/57"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110636"},{"type":"WEB","url":"https://pypi.org"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-paths"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/revolunet/pypdftk","events":[{"introduced":"0"},{"last_affected":"1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.5"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.5","v0.4","v0.3","v0.2","pypdftk-0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110636.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}