7.2

CVE-2021-24452: boldgrid w3_total_cache Cross-site Scripting

CVSS: 7.2v3.1HighModified
Published 19-07-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24452 is a high (CVSS 7.2) Cross-site Scripting vulnerability in boldgrid w3_total_cache. EPSS estimates a 1.92% chance of exploitation in the next 30 days, higher than 79.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v3.1 (wordfence)
EPSS score
1.92%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 19-07-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The W3 Total Cache WordPress plugin before 2.1.5 was affected by a reflected Cross-Site Scripting (XSS) issue within the "extension" parameter in the Extensions dashboard, when the 'Anonymously track usage to improve product quality' setting is enabled, as the parameter is output in a JavaScript context without proper escaping. This could allow an attacker, who can convince an authenticated admin into clicking a link, to run malicious JavaScript within the user's web browser, which could lead to full site compromise.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.92%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.92% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.92%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Boldgrid1 product
Wordpress1 product
  • w3-total-cache≥ 0.5, ≤ 2.1.4 (fixed in 2.1.5)

2 vendors · 2 products

References

2 links