CVE-2018-15886

7.2 highEPSS 1.6%

High (7.2) in monstra monstra. EPSS 1.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

7.2 high

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2018-09-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

monstra:monstra

References

https://github.com/monstra-cms/monstra/issues/455
https://github.com/monstra-cms/monstra/issues/455

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