CVE-2024-0561Public exploitNetwork attack vector

Stored XSS via unescaped widget attributes

Published Mar 11, 2024 · Updated Oct 31, 2024

Stored XSS in Ultimate Posts Widget before 2.3.1 allows remote authenticated users to execute scripts through widget options. The Title, URL, and CSS Classes values are inserted into HTML attributes without validation or escaping, so crafted event handlers persist. Administrator access is required, and execution occurs when a user hovers over the rendered widget title or affected editor field.

CVSS severity5.4
Medium
EPSS probability0.44%
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 Ultimate Posts Widget before 2.3.1 allows remote authenticated users to execute scripts through widget options. The Title, URL, and CSS Classes values are inserted into HTML attributes without validation or escaping, so crafted event handlers persist. Administrator access is required, and execution occurs when a user hovers over the rendered widget title or affected editor field.

The record

CVE
CVE-2024-0561
Published
Mar 11, 2024
Updated
Oct 31, 2024
Vendor
Copy Delete Posts
Product
Ultimate Posts Widget
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 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=0 <2.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Copy Delete Posts · Ultimate Posts Widgetversion=0 <2.3.1

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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