CVE-2026-70374
HashBrown CMS - OS Command Injection in Media Upload Thumbnail Generation
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail in src/Server/Entity/Resource/Media.js builds a temporary file path as 'thumbnail' + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec ('convert ' + tempFile + ...).
| CWE | CWE-78 |
| Vendor | hashbrowncms |
| Product | hashbrown-cms |
| Published | Aug 5, 2026 |
| Last Updated | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
HashBrownCMS / hashbrown-cms
0 ≤ 1.4.6
References
Credits
Alijonov Alisher