CVE-2026-110636pypdftk through 0.5 OS Command Injection via PDF and Output Paths
Updated under an hour ago ()
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It affects revolunet pypdftk. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 2.35%, higher than 83% of scored CVEs.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 2.35% (percentile 83)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
revolunet pypdftk revolunet:pypdftk (from the name) | through 0.5 | CNA record |
References
- https://github.com/revolunet/pypdftk/issues/56issue-tracking
- https://github.com/revolunet/pypdftk/pull/57issue-tracking, patch
- https://github.com/revolunet/pypdftk/blob/1d3b40c3b42fb3cc6b0192d34aba2c21a1efd369/pypdftk.py#L87-L123technical-description
- https://github.com/revolunet/pypdftkproduct
- https://www.vulncheck.com/advisories/pypdftk-through-0.5-os-command-injection-via-pdf-and-output-pathsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.