CVE-2021-24427
W3 Total Cache < 2.1.3 - Authenticated Stored XSS
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue
- Record
CVE-2021-24427- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
W3 Total Cache < 2.1.3 - Authenticated Stored XSS
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue
- Record
CVE-2021-24427- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-11339 No score
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue
- Record
EUVD-2021-11339- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6h4x-c495-6qh7 No score
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN...
The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue
- Record
GHSA-6h4x-c495-6qh7- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24427 is a medium vulnerability (CVSS 4.8) in Boldgrid W3 Total Cache, published July 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. No source names a fixed version.
References
wpscan.com/vulnerability/5da5ce9a-82a6-404f-8dec-795d7905b3f9
m0ze.ru/vulnerability/%5B2021-04-25%5D-%5BWordPress%5D-%5BCWE-79%5D-W3-Total-Cache-WordPress-Plugin-v2.1.2.txt
nvd.nist.gov/vuln/detail/CVE-2021-24427
github.com/advisories/GHSA-6h4x-c495-6qh7