CVE-2024-27668Public exploitNetwork attack vector

Script execution via unescaped Custom Blocks markup

Published Mar 4, 2024 · Updated Mar 28, 2025

Cross-site scripting in Flusity-CMS 2.33 Custom Blocks allows attackers to execute scripts through crafted block content. The public proof of concept injects an image element with an onerror handler into Custom Blocks, which the application renders as executable markup. Execution requires a user to view the affected block; public material does not identify the precise input field or whether authentication is required.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Flusity-CMS 2.33 Custom Blocks allows attackers to execute scripts through crafted block content. The public proof of concept injects an image element with an onerror handler into Custom Blocks, which the application renders as executable markup. Execution requires a user to view the affected block; public material does not identify the precise input field or whether authentication is required.

The record

CVE
CVE-2024-27668
Published
Mar 4, 2024
Updated
Mar 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1OSVCVSS:3.1/AV:N/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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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