What is CVE-2023-36291?

CVE-2023-36291 is a medium-severity vulnerability in Maxsite Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-07-03.

How severe is CVE-2023-36291?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Maxsite Cms

CVE-2023-36291

Cross Site Scripting vulnerability in Maxsite CMS v.108.7 allows a remote attacker to execute arbitrary code via the f_content parameter in the admin/page_new file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-07-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Maxsite Cms — versions 108.7

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/maxsite/cms/issues/500 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-36291?: CVE-2023-36291 is a medium-severity vulnerability in Maxsite Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-07-03.
How severe is CVE-2023-36291?: Medium severity. CVSS v3 base score is 6.1 out of 10.