What’s Vulnerable › Vulnerabilities
CVE-2017-16941
- Severity: high (CVSS 8.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2017-11-25 · updated 2026-06-17
- Weakness: CWE-434
Description
October CMS through 1.0.428 does not prevent use of .htaccess in themes, which allows remote authenticated users to execute arbitrary PHP code by downloading a theme ZIP archive from /backend/cms/themes, and then uploading and importing a modified archive with two new files: a .php file and a .htaccess file. NOTE: the vendor says "I don't think [an attacker able to login to the system under an account that has access to manage/upload themes] is a threat model that we need to be considering.
Affected products
- octobercms october: through 1.0.428
References
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