CVE-2024-39647Known exploitationNetwork attack vector

Reflected XSS via unescaped form parameter

Published Aug 1, 2024 · Updated Apr 28, 2026

Reflected XSS in Kofi Mokome Message Filter for Contact Form 7 1.6.1.1 and earlier allows remote attackers to execute scripts. The old-messages page reflects the form parameter into HTML without sufficient input sanitization or context-appropriate output escaping. Exploitation requires a user to follow a crafted link, after which attacker-supplied script runs in that user’s browser under the affected site’s origin.

CVSS severity6.1
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Kofi Mokome Message Filter for Contact Form 7 1.6.1.1 and earlier allows remote attackers to execute scripts. The old-messages page reflects the form parameter into HTML without sufficient input sanitization or context-appropriate output escaping. Exploitation requires a user to follow a crafted link, after which attacker-supplied script runs in that user’s browser under the affected site’s origin.

The record

CVE
CVE-2024-39647
Published
Aug 1, 2024
Updated
Apr 28, 2026
Vendor
Kofi Mokome
Product
Message Filter for Contact Form 7
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 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 <=1.6.1.1 changes=[{"at":"1.6.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kofi Mokome · Message Filter for Contact Form 7version=0 <=1.6.1.1 changes=[{"at":"1.6.2","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
6.1NVDCVSS: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.

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
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1189Drive-by Compromise

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.

Reported exploitation

Technologies

Your stack

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Your stack

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