A directory traversal vulnerability in the SevenZipFile.extractall() function of the…
Priority MEDIUM 52CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02444 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed py7zr (PyPI): 0.20.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | py7zr (PyPI) | before 0.20.1 | 0.20.1 | Patch available | GHSA-m8xw-9x5x-6vh3 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- py7zr (PyPI) Vendor— Affected before 0.20.1 Fixed in 0.20.1 Patch available GHSA-m8xw-9x5x-6vh3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:py7zr_project:py7zr:*:*:*:*:*:python:*:* | before 0.20.1 | Vulnerable | Py7zr Project |
- cpe:2.3:a:py7zr_project:py7zr:*:*:*:*:*:python:*:* Versions before 0.20.1 Vulnerable ·Py7zr Project
Remediation
- Fix · GHSA-m8xw-9x5x-6vh3 py7zr (PyPI) Fixed in 0.20.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-44900
- 2026-10-03 Alias added: GHSA-m8xw-9x5x-6vh3
References
Exploit 2
Sources
- CVE-2022-44900 · CVE Program
- CVE-2022-44900 · NVD
- FIRST EPSS
- GHSA-m8xw-9x5x-6vh3 · GitHub Advisory Database · CC BY 4.0
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