CVE-2021-24430: The Speed Booster Pack ⚡ PageSpeed Optimization Suite WordPress plugin before 4.2.0 did not validate its cachi

Q: How do I fix CVE-2021-24430?

speed booster pack: upgrade to 4.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-24430 being exploited?

CVE-2021-24430 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24430 affect?

CVE-2021-24430 affects speed booster pack. Severity is high (CVSS 7.2). 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

Q: How urgent is CVE-2021-24430?

Priority 50/100. High severity; Public exploit reference

This month

HIGH 7.2UPGRADE

CVE-2021-24430 is a high-severity flaw (CVSS 7.2) affecting speed booster pack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-94
Published	2021-08-02
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: optimocha

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-02 11:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

optimocha speed booster pack UPGRADE

Affected: < 4.2.0

Fixed in: 4.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy speed-booster-pack || rpm -q speed-booster-pack || speed-booster-pack --version

2. UPGRADE to 4.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade speed-booster-pack

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade speed-booster-pack

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24430?

speed booster pack: upgrade to 4.2.0. Exact commands for each OS are on this page.

Is CVE-2021-24430 being exploited?

CVE-2021-24430 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24430 affect?

CVE-2021-24430 affects speed booster pack. Severity is high (CVSS 7.2). 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

How urgent is CVE-2021-24430?

Priority 50/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2021-25023 HIGH 7.2 UPGRADE The Speed Booster Pack ⚡ PageSpeed Optimization Suite WordPress plugin before 4.3.3.1 does not escape the sbp_

References

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