CVE-2021-24286Public exploitNetwork attack vector

Script execution via unsanitized settings tab

Published May 14, 2021 · Updated Aug 3, 2024

Reflected XSS in the settings page of Moove Agency Redirect 404 to parent before 1.3.1 allows remote attackers to run script via tab. The options-general.php handler returns the tab query parameter in admin-page markup without sanitizing or escaping it, so injected event attributes execute in the browser. Exploitation requires a WordPress administrator to open a crafted settings-page URL, allowing script execution in that authenticated browser context.

CVSS severity6.1
Medium
EPSS probability13.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the settings page of Moove Agency Redirect 404 to parent before 1.3.1 allows remote attackers to run script via tab. The options-general.php handler returns the tab query parameter in admin-page markup without sanitizing or escaping it, so injected event attributes execute in the browser. Exploitation requires a WordPress administrator to open a crafted settings-page URL, allowing script execution in that authenticated browser context.

The record

CVE
CVE-2021-24286
Published
May 14, 2021
Updated
Aug 3, 2024
Vendor
Moove Agency
Product
Redirect 404 to parent
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2021CVE 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=1.3.1 <1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Moove Agency · Redirect 404 to parentversion=1.3.1 <1.3.1

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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