bestzip 2.2.6 and 3.0.2 Argument Injection via the Native Zip Destination
Priority LOW 39CWE-88Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-88.
Summary
bestzip versions 2.2.6 and 3.0.2 contain an argument injection vulnerability in the nativeZip function that allows attackers to inject arbitrary arguments to the Info-ZIP backend. Attackers can supply a malicious destination path combined with crafted source entries to execute arbitrary commands with Node.js process privileges. Fixed in 2.2.7 and 3.0.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0028 20th percentileScored 2026-11-07
Fix Fixed bestzip (nfriedly): 2.2.7, 3.0.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA bestzip (nfriedly) Fixed in 2.2.7, 3.0.3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-87794
- 2026-10-03 Alias added: GHSA-pf92-m78r-h85c
References
More nfriedly vulnerabilities
- TI-2026-55505 bestzip before 2.2.6 and 3.0.x before 3.0.2 Argument Injection via Missing Option Delimiter CVSS 4.0HIGH 8.6
Sources
- CVE-2026-87794 · CVE Program
- CVE-2026-87794 · NVD
- FIRST EPSS
- GHSA-pf92-m78r-h85c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences