CVE-2023-1323Public exploitNetwork attack vector

Stored script execution via unescaped form name

Published Jun 12, 2023 · Updated Jan 3, 2025

Stored cross-site scripting in Easy Forms for Mailchimp before 6.8.9 allows remote authenticated users to execute script in visitors' browsers. The form editor stores an unescaped Form Name value and renders it in the form list and embedded forms without neutralizing script markup. An administrator-level account is required, and execution occurs when a user views the affected form list or a page containing the shortcode.

CVSS severity4.8
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Easy Forms for Mailchimp before 6.8.9 allows remote authenticated users to execute script in visitors' browsers. The form editor stores an unescaped Form Name value and renders it in the form list and embedded forms without neutralizing script markup. An administrator-level account is required, and execution occurs when a user views the affected form list or a page containing the shortcode.

The record

CVE
CVE-2023-1323
Published
Jun 12, 2023
Updated
Jan 3, 2025
Vendor
YIKES, Inc.
Product
Easy Forms for Mailchimp
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 3, 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?

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

  1. Affected versionversion=0 <6.8.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

YIKES, Inc. · Easy Forms for Mailchimpversion=0 <6.8.9

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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