CVE-2026-70374: high-severity vulnerability in HashBrownCMS hashbrown-cms
HashBrown CMS - OS Command Injection in Media Upload Thumbnail Generation
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 1.9%
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 + ...).
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
HashBrownCMS · hashbrown-cmsRelated CVEs — HashBrownCMS hashbrown-cms
In the same product, most dangerous first.