WordPress plugin
Speed Booster Pack PageSpeed Optimization Suite <= 4.1.9. — Authenticated (Admin+) Remote Code Execution
CVE-2021-24430Published · Updated Action summary
Affected: <4.2.0Update to 4.2.0 or newer
All remediation steps- Severity
- High7.2
- CVSS
- 7.2CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Speed Booster Pack ⚡ PageSpeed Optimization Suite speed-booster-pack
- Affected< 4.2.0
- Patched in4.2.0
Update to 4.2.0 or newer.
You are affected if you run < 4.2.0. Version 4.2.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Speed Booster Pack ⚡ PageSpeed Optimization Suite.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.2.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Speed Booster Pack ⚡ PageSpeed Optimization Suite to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to R3N0.
The Speed Booster Pack PageSpeed Optimization Suite WordPress plugin before 4.2.0 did not validate its caching_exclude_urls and caching_include_query_strings settings before outputting them in a PHP file, which could lead to RCE
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Speed Booster Pack ⚡ PageSpeed Optimization Suite
All 2| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Admin+ SQL Injection ≤4.3.3Update to 4.3.3.1 | CVE-2021-25023 |
- High7.2Admin+ SQL Injection
≤4.3.3Update to 4.3.3.1
Timeline
CVE published
Severity high, CVSS 7.2
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.