Summary
generated automatically from NVD datapypdftk through version 0.5 has an OS command injection flaw (CWE-78) in its fill_form(), dump_data_fields(), and pdftk_cmd_util() functions, which assemble shell commands from caller-supplied file paths. An attacker who controls the pdf_path or out_file value can insert shell metacharacters that subprocess.Popen, running with shell=True, interprets, resulting in arbitrary OS command execution with the privileges of the Python process. The flaw is rated CRITICAL with a CVSS v3.1 score of 9.8.
NVD description
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.
EPSS · FIRST.org
2.3%probability of exploitation in the next 30 days
Higher than 83% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 14 oct. 2026
- Updated
- 16 oct. 2026
- Status
- Deferred
- Source
- disclosure@vulncheck.com
Weaknesses (CWE)
References (5)
Similar CVEs
Other vulnerabilities of type CWE-78
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