6.1

CVE-2021-24436: boldgrid w3_total_cache Cross-site Scripting

CVSS: 6.1v3.1MediumModified
Published 19-07-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24436 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in boldgrid w3_total_cache. EPSS estimates a 1.91% chance of exploitation in the next 30 days, higher than 79.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
1.91%
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 2.1.4 was vulnerable to a reflected Cross-Site Scripting (XSS) security vulnerability within the "extension" parameter in the Extensions dashboard, which is output in an attribute without being escaped first. 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

1.91%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.91% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.91%

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< 2.1.4

2 vendors · 2 products

References

2 links