RCE in Monstra Cms

CVE-2020-13978

Monstra CMS 3.0.4 allows an attacker, who already has administrative access to modify .chunk.php files on the Edit Chunk screen, to execute arbitrary OS commands via the Theme Module by visiting the admin/index.php?id=themes&action=edit_chunk URI. NOTE: there is no indication that the Edit Chunk feature was intended to prevent an administrator from using PHP's exec feature

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-13978?
CVE-2020-13978 is a high-severity vulnerability in Monstra Cms, classified under OS Command Injection. CVSS score: 7.2/10. Published 2020-06-09.
How severe is CVE-2020-13978?
High severity. CVSS v3 base score is 7.2 out of 10.