What is CVE-2024-33424?

CVE-2024-33424 is a medium-severity vulnerability in Cmsimple, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-05-01.

How severe is CVE-2024-33424?

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

Is CVE-2024-33424 known to be exploited?

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

XSS in Cmsimple

CVE-2024-33424

A cross-site scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Downloads parameter under the Language section.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-05-01 · 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: 0.004 (32.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Cmsimple — versions 5.15

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

adiapera/xss_

References

github.com/adiapera/xss_language_cmsimple_5.15 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-33424?: CVE-2024-33424 is a medium-severity vulnerability in Cmsimple, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-05-01.
How severe is CVE-2024-33424?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2024-33424 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.