What is CVE-2018-6383?

CVE-2018-6383 is a high-severity vulnerability in Monstra, classified under Incomplete List of Disallowed Inputs. CVSS score: 8.8/10. Published 2018-01-29.

How severe is CVE-2018-6383?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-6383 known to be exploited?

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

Vulnerability in Monstra

CVE-2018-6383

Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.

EPSS: 0.135 (96.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Monstra
N/a — versions n/a

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-6383?: CVE-2018-6383 is a high-severity vulnerability in Monstra, classified under Incomplete List of Disallowed Inputs. CVSS score: 8.8/10. Published 2018-01-29.
How severe is CVE-2018-6383?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-6383 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.