CVE-2024-2509Public exploitNetwork attack vector

Stored XSS via unescaped form placeholder

Published Apr 5, 2024 · Updated Aug 1, 2024

Stored XSS in Kadence Blocks before 3.2.26 allows remote authenticated users to execute script through a crafted form placeholder. The kadence/advanced-form-text block places its placeholder option into rendered input markup without sufficient validation or output escaping. Contributor access is required to save the crafted block, and script runs when another user previews or views the post; CISA also lists Editor Blocks by Download Manager before 3.2.26 without publishing a product-specific mechanism.

CVSS severity6.5
Medium
EPSS probability0.43%
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 Kadence Blocks before 3.2.26 allows remote authenticated users to execute script through a crafted form placeholder. The kadence/advanced-form-text block places its placeholder option into rendered input markup without sufficient validation or output escaping. Contributor access is required to save the crafted block, and script runs when another user previews or views the post; CISA also lists Editor Blocks by Download Manager before 3.2.26 without publishing a product-specific mechanism.

The record

CVE
CVE-2024-2509
Published
Apr 5, 2024
Updated
Aug 1, 2024
Vendor
Kadence WP
Product
Kadence Blocks
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 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 <3.2.26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kadence WP · Kadence Blocksversion=0 <3.2.26
W3 Eden, Inc. · Editor Blocks by Download Managerversion=0 <3.2.26

Published CVSS scores

6.5CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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