CVE-2023-5243Public exploitNetwork attack vector

Stored XSS via unescaped Hover Title setting

Published Oct 31, 2023 · Updated Apr 23, 2025

Stored XSS in Nazmul Hossain Nihal Login Screen Manager 3.5.2 and earlier allows remote authenticated users to run scripts. The Hover Title setting stores administrator-supplied markup without sanitization and renders it on the WordPress login page without escaping. Administrator access and a configuration that disables unfiltered_html, including multisite, are required; the script executes when a user visits the login page.

CVSS severity4.8
Medium
EPSS probability0.38%
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 Nazmul Hossain Nihal Login Screen Manager 3.5.2 and earlier allows remote authenticated users to run scripts. The Hover Title setting stores administrator-supplied markup without sanitization and renders it on the WordPress login page without escaping. Administrator access and a configuration that disables unfiltered_html, including multisite, are required; the script executes when a user visits the login page.

The record

CVE
CVE-2023-5243
Published
Oct 31, 2023
Updated
Apr 23, 2025
Vendor
Nazmul Hossain Nihal
Product
Login Screen Manager
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=0 <=3.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Nazmul Hossain Nihal · Login Screen Managerversion=0 <=3.5.2

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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