What is CVE-2021-36920?

CVE-2021-36920 is a medium-severity vulnerability in Wpchill Download Monitor, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-01-14.

How severe is CVE-2021-36920?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-36920 known to be exploited?

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

XSS in Wpchill Download Monitor

CVE-2021-36920

Authenticated Reflected Cross-Site Scripting (XSS) vulnerability discovered in WordPress plugin Download Monitor (versions <= 4.4.6).

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Wpchill Download Monitor
Wpchill Download Monitor (WordPress Plugin) — versions <= 4.4.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wordpress.org/plugins/download-monitor/ (Third Party Advisory, Release Notes)
patchstack.com/database/vulnerability/download-monitor/wordpress-download-monit… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-36920?: CVE-2021-36920 is a medium-severity vulnerability in Wpchill Download Monitor, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-01-14.
How severe is CVE-2021-36920?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-36920 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.