CVE-2018-19421
UnknownEPSS 0.78%
Last modified
CVE-2018-19421 is a vulnerability of currently unknown severity. In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.
Description
In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Get-Simple | Getsimple Cms | 3.3.15 |
References
- https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301Exploit, Third Party Advisory
- https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-19421?
In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.
How severe is CVE-2018-19421?
Severity scoring for CVE-2018-19421 is pending analysis. The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.
How do I fix CVE-2018-19421?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-19421?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST