CVE-2021-36899: Authenticated (admin+) Reflected Cross-Site Scripting (XSS) vulnerability in Gabe Livan's Asset CleanUp: Page

Q: How do I fix CVE-2021-36899?

page speed booster project: upgrade to 1.3.8.5. Exact commands for each OS are on this page.

Q: Is CVE-2021-36899 being exploited?

CVE-2021-36899 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-2021-36899 affect?

CVE-2021-36899 affects page speed booster project. Severity is medium (CVSS 4.8). Authenticated (admin+) Reflected Cross-Site Scripting (XSS) vulnerability in Gabe Livan's Asset CleanUp: Page Speed Booster plugin <= 1.3.8.4 at WordPress.

Q: How urgent is CVE-2021-36899?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 4.8UPGRADE

CVE-2021-36899 is a medium-severity flaw (CVSS 4.8) affecting page speed booster project. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authenticated (admin+) Reflected Cross-Site Scripting (XSS) vulnerability in Gabe Livan's Asset CleanUp: Page Speed Booster plugin <= 1.3.8.4 at WordPress.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-10-11
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: asset cleanup\

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

Am I affected?

Timeline

2022-10-11 18:15 UTCPublished CVE record published
2026-06-17 03:59 UTCUpdated Record last modified

asset cleanup\ page speed booster project UPGRADE

Affected: < 1.3.8.5

Fixed in: 1.3.8.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy -page-speed-booster-project || rpm -q -page-speed-booster-project || -page-speed-booster-project --version

2. UPGRADE to 1.3.8.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade -page-speed-booster-project

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade -page-speed-booster-project

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-2021-36899?

page speed booster project: upgrade to 1.3.8.5. Exact commands for each OS are on this page.

Is CVE-2021-36899 being exploited?

CVE-2021-36899 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-2021-36899 affect?

CVE-2021-36899 affects page speed booster project. Severity is medium (CVSS 4.8). Authenticated (admin+) Reflected Cross-Site Scripting (XSS) vulnerability in Gabe Livan's Asset CleanUp: Page Speed Booster plugin <= 1.3.8.4 at WordPress.

How urgent is CVE-2021-36899?

Priority 29/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24983 MEDIUM 6.1 UPGRADE The Asset CleanUp: Page Speed Booster WordPress plugin before 1.3.8.5 does not sanitise and escape POSted para
CVE-2021-24937 MEDIUM 6.1 UPGRADE The Asset CleanUp: Page Speed Booster WordPress plugin before 1.3.8.5 does not escape the wpacu_selected_sub_t

References

← Back to latest CVEs