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TI-2021-06726 Aliases CVE-2021-24436GHSA-8qcc-x8gh-5483

W3 Total Cache < 2.1.4 - Reflected XSS in Extensions Page (Attribute Context)

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.0183 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed W3 Total Cache (BoldGrid): 2.1.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
BoldGridW3 Total Cache2.1.4 to before 2.1.42.1.4Patch availableCNA
  • W3 Total Cache VendorBoldGrid Affected 2.1.4 to before 2.1.4 Fixed in 2.1.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:boldgrid:w3_total_cache:*:*:*:*:*:wordpress:*:*before 2.1.4VulnerableBoldGrid
  • cpe:2.3:a:boldgrid:w3_total_cache:*:*:*:*:*:wordpress:*:* Versions before 2.1.4 Vulnerable ·BoldGrid

Remediation

  • Fix · CNA W3 Total Cache (BoldGrid) Fixed in 2.1.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24436
  2. 2026-10-03 Alias added: GHSA-8qcc-x8gh-5483

References

Exploit 1

  • TI-2013-01782 WordPress W3 Total Cache Plugin 0.9.2.8 has a Remote PHP Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2019-04758 pub/sns.php in the W3 Total Cache plugin before 0.9.4 for WordPress allows remote… CVSS 3.1HIGH 7.5
  • TI-2024-11141 W3 Total Cache <= 2.8.1 Information Exposure via Log Files CVSS 3.1HIGH 7.5
  • TI-2024-11471 W3 Total Cache <= 2.8.1 - Authenticated (Subscriber+) Missing Authorization to Server-Side Request Forgery CVSS 3.1HIGH 8.5
  • TI-2012-05043 Information disclosure in W3 Total Cache CVSS 3.1HIGH 7.5
  • TI-2012-05042 Information disclosure in W3 Total Cache CVSS 3.1HIGH 7.5
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences