CVE-2021-24162Public exploitNetwork attack vector

JavaScript injection via nonce-free settings import

Published Apr 5, 2021 · Updated Aug 3, 2024

CSRF in ExpressTech Systems Responsive Menu and Responsive Menu Pro before 4.0.4 allows remote attackers to inject malicious JavaScript. The legacy settings-import handler reads attacker-supplied JSON from responsive-menu-import-file and calls updateOptions without verifying a WordPress nonce. The handler exists before 4.0.0 and in legacy mode through 4.0.3; exploitation requires an authenticated administrator to visit attacker-controlled content.

CVSS severity8.8
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in ExpressTech Systems Responsive Menu and Responsive Menu Pro before 4.0.4 allows remote attackers to inject malicious JavaScript. The legacy settings-import handler reads attacker-supplied JSON from responsive-menu-import-file and calls updateOptions without verifying a WordPress nonce. The handler exists before 4.0.0 and in legacy mode through 4.0.3; exploitation requires an authenticated administrator to visit attacker-controlled content.

The record

CVE
CVE-2021-24162
Published
Apr 5, 2021
Updated
Aug 3, 2024
Vendor
ExpressTech Systems
Product
Responsive Menu
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 5, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.0.4 <4.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ExpressTech Systems · Responsive Menuversion=4.0.4 <4.0.4
ExpressTech Systems · Responsive Menu Proversion=4.0.4 <4.0.4

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

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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