CVE-2026-70374
High
Description
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 + ...).
SeverityHigh
CVSS8.8
Exploit probability—
ProductHashbrowncms Hashbrown-cms
PublishedAug 5, 2026
First seenAug 5, 2026
Weakness typeCWE-78OS command injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| HashBrownCMS hashbrown-cms | v ≤ 1.4.6 | — |
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