RCE in Monstra

CVE-2018-15886

Monstra CMS 3.0.4 does not properly restrict modified Snippet content, as demonstrated by the admin/index.php?id=snippets&action=edit_snippet&filename=google-analytics URI, which allows attackers to execute arbitrary PHP code by placing this code after a <?php substring.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.016 (74.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Monstra — versions 3.0.4
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-15886?
CVE-2018-15886 is a high-severity vulnerability in Monstra, classified under Code Injection. CVSS score: 7.2/10. Published 2018-09-10.
How severe is CVE-2018-15886?
High severity. CVSS v3 base score is 7.2 out of 10.