CVE-2021-24983Network attack vector

Admin-triggered reflected XSS via AJAX parameter

Published Feb 1, 2022 · Updated Aug 3, 2024

Cross-site scripting in Asset CleanUp: Page Speed Booster before 1.3.8.5 allows remote attackers to run script in an administrator's browser via AJAX. The wpassetcleanup_fetch_active_plugins_icons AJAX action reflects POSTed parameters without sanitizing or escaping them. Exploitation requires an administrator to access a crafted request, enabling script execution in that administrator's WordPress session without directly changing server data.

CVSS severity6.1
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Asset CleanUp: Page Speed Booster before 1.3.8.5 allows remote attackers to run script in an administrator's browser via AJAX. The wpassetcleanup_fetch_active_plugins_icons AJAX action reflects POSTed parameters without sanitizing or escaping them. Exploitation requires an administrator to access a crafted request, enabling script execution in that administrator's WordPress session without directly changing server data.

The record

CVE
CVE-2021-24983
Published
Feb 1, 2022
Updated
Aug 3, 2024
Vendor
Gabe Livan
Product
Asset CleanUp: Page Speed Booster
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.3.8.5 <1.3.8.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gabe Livan · Asset CleanUp: Page Speed Boosterversion=1.3.8.5 <1.3.8.5

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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