CVE-2024-33918Network attack vector

Author-level stored XSS via unsanitized content rendering

Published May 3, 2024 · Updated Apr 28, 2026

Stored XSS in Max K AJAX Login and Registration modal popup + inline form 2.23 and earlier allows remote authenticated users to run scripts. The plugin stores Author-supplied content without sufficient input sanitization and later renders it without adequate output escaping. Public advisories do not identify the affected field or rendering function; Author access is required, and the script executes when another user views the stored content.

CVSS severity5.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Max K AJAX Login and Registration modal popup + inline form 2.23 and earlier allows remote authenticated users to run scripts. The plugin stores Author-supplied content without sufficient input sanitization and later renders it without adequate output escaping. Public advisories do not identify the affected field or rendering function; Author access is required, and the script executes when another user views the stored content.

The record

CVE
CVE-2024-33918
Published
May 3, 2024
Updated
Apr 28, 2026
Vendor
Max K
Product
AJAX Login and Registration modal popup + inline form
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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=n/a <=2.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Max K · AJAX Login and Registration modal popup + inline formversion=n/a <=2.23

Published CVSS scores

5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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