CVE-2026-78839
An arbitrary file upload vulnerability in AppNitro MachForm v30 allows attackers to execute arbitrary code via uploading a crafted .phar file.
- Published
- Sep 4, 2026
- Updated
- Sep 9, 2026
- Assigning CNA
- mitre
- Evidence observed
- Sep 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 42.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
An arbitrary file upload vulnerability in AppNitro MachForm v30 allows attackers to execute arbitrary code via uploading a crafted .phar file.
Sources
1Proof-of-concept for CVE-2026-78839, an arbitrary file upload vulnerability in AppNitro MachForm v30 allowing remote code execution via crafted .phar files.
Responsible use
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