CVE-2024-4384Public exploitNetwork attack vector

Stored XSS via unescaped widget description

Published Jun 21, 2024 · Updated Aug 1, 2024

Stored XSS in dmonnier CSSable Countdown 1.5 and earlier allows remote authenticated users to run script in visitors' browsers. The widget's Event Description setting stores injected script markup and later renders it on the site frontend without sanitization or output escaping. Administrator-level access is required, but the issue remains exploitable when unfiltered_html is disabled, including on multisite deployments.

CVSS severity4.8
Medium
EPSS probability0.35%
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 dmonnier CSSable Countdown 1.5 and earlier allows remote authenticated users to run script in visitors' browsers. The widget's Event Description setting stores injected script markup and later renders it on the site frontend without sanitization or output escaping. Administrator-level access is required, but the issue remains exploitable when unfiltered_html is disabled, including on multisite deployments.

The record

CVE
CVE-2024-4384
Published
Jun 21, 2024
Updated
Aug 1, 2024
Vendor
dmonnier
Product
CSSable Countdown
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <=1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

dmonnier · CSSable Countdownversion=0 <=1.5

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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 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')

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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