CVE-2024-24871Network attack vector

Editor-level stored XSS via unescaped header/footer content

Published Feb 8, 2024 · Updated Apr 28, 2026

Stored XSS in Creative Themes Blocksy 2.0.19 and earlier allows remote authenticated users to inject scripts through header or footer content. Blocksy stores header or footer input without sufficient sanitization or output escaping, causing the payload to execute when a visitor opens the affected page. Editor-level access and a victim page view are required; exposure is limited to multisite sites or sites with unfiltered_html disabled.

CVSS severity5.4
Medium
EPSS probability0.32%
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 Creative Themes Blocksy 2.0.19 and earlier allows remote authenticated users to inject scripts through header or footer content. Blocksy stores header or footer input without sufficient sanitization or output escaping, causing the payload to execute when a visitor opens the affected page. Editor-level access and a victim page view are required; exposure is limited to multisite sites or sites with unfiltered_html disabled.

The record

CVE
CVE-2024-24871
Published
Feb 8, 2024
Updated
Apr 28, 2026
Vendor
Creative Themes
Product
Blocksy
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 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=0 <=2.0.19 changes=[{"at":"2.0.20","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Creative Themes · Blocksyversion=0 <=2.0.19 changes=[{"at":"2.0.20","status":"unaffected"}]

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/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')
CAPEC-592Stored XSS
T1059.007JavaScript

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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