What is CVE-2018-19421?

CVE-2018-19421 is a low-severity vulnerability in Get-simple Getsimple_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 3.8/10. Published 2018-11-21.

How severe is CVE-2018-19421?

Low severity. CVSS v3 base score is 3.8 out of 10.

Is CVE-2018-19421 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Get-simple Getsimple_cms

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.

Vulnerability class: Unrestricted File Upload

EPSS: 0.008 (51.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N.

Affected products

Get-simple Getsimple_cms — versions 3.3.15
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-19421?: CVE-2018-19421 is a low-severity vulnerability in Get-simple Getsimple_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 3.8/10. Published 2018-11-21.
How severe is CVE-2018-19421?: Low severity. CVSS v3 base score is 3.8 out of 10.
Is CVE-2018-19421 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.