{"schema":"threatline.record/2","record":{"id":"CVE-2026-110636","aliases":[],"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.","categories":["Unclassified"],"product":"pypdftk","vendor":"revolunet","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110636","source_modified_at":"2026-10-20T01:21:31.597Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"pypdftk","vendor":"revolunet","versions":[{"version":"0","lessThanOrEqual":"0.5","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.02348,"percentile":0.83558,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:17:08.465Z","modified_at":"2026-10-20T01:21:31.597Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110636","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T01:21:31.597Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110636","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/revolunet/pypdftk/issues/56","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/revolunet/pypdftk/pull/57","tags":["issue-tracking","patch"]},{"source":"CVE List","url":"https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/revolunet/pypdftk","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-paths","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-20T01:21:04.535653Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T01:21:31.597Z","content_hash":"e038908f48d97b99639ff9182894051074a90c0ab20d4ebb190782cacbed98ba"}}