What is CVE-2021-24723?

CVE-2021-24723 is a medium-severity vulnerability in Wpreactions Wp Reactions Lite, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-01.

How severe is CVE-2021-24723?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-24723 known to be exploited?

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

XSS in Wpreactions Wp Reactions Lite

CVE-2021-24723

The WP Reactions Lite WordPress plugin before 1.3.6 does not properly sanitize inputs within wp-admin pages, allowing users with sufficient access to inject XSS payloads within /wp-admin/ pages.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-11-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (49.3th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% 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

Wpreactions Wp Reactions Lite
Wp Reactions Lite — versions 1.3.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

wpscan.com/vulnerability/0a46ae96-41e5-4b52-91c3-409f7387aecc (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24723?: CVE-2021-24723 is a medium-severity vulnerability in Wpreactions Wp Reactions Lite, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-01.
How severe is CVE-2021-24723?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-24723 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.