CVE-2026-57423Network attack vector

Unauthenticated browser script execution

Published Jul 13, 2026 · Updated Jul 13, 2026

Reflected XSS in Kofi Mokome Message Filter for Contact Form 7 1.6.3.8 and earlier allows remote attackers to execute scripts via crafted requests. Neither the CNA record nor the referenced advisory identifies the vulnerable parameter, handler, or output context that reflects untrusted input without adequate escaping. Exploitation requires an unauthenticated attacker to induce user interaction, such as opening a crafted link, and executes script in the affected site origin.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
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 1.6.3.8 and earlier allows remote attackers to execute scripts via crafted requests. Neither the CNA record nor the referenced advisory identifies the vulnerable parameter, handler, or output context that reflects untrusted input without adequate escaping. Exploitation requires an unauthenticated attacker to induce user interaction, such as opening a crafted link, and executes script in the affected site origin.

The record

CVE
CVE-2026-57423
Published
Jul 13, 2026
Updated
Jul 13, 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. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.6.3.8 changes=[{"at":"1.6.3.9","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kofi Mokome · Message Filter for Contact Form 7version=0 <=1.6.3.8 changes=[{"at":"1.6.3.9","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

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 exploitationUnconfirmed
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.

Technologies

Your stack

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Your stack

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