CVE-2023-45748Network attack vector

Subscriber record deletion via missing AJAX nonces

Published Oct 16, 2023 · Updated Apr 28, 2026

Cross-site request forgery in Mailmunch Forms for Mailchimp through 3.1.4 allows remote attackers to delete subscriber records via forged AJAX requests. The delete_email(), delete_widget(), change_email_status(), and settings_page() functions omit WordPress nonce validation, so forged requests execute when an administrator is induced to click a link. The attack requires administrator interaction and can delete widgets or subscriber data, with no demonstrated confidentiality impact.

CVSS severity8.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Mailmunch Forms for Mailchimp through 3.1.4 allows remote attackers to delete subscriber records via forged AJAX requests. The delete_email(), delete_widget(), change_email_status(), and settings_page() functions omit WordPress nonce validation, so forged requests execute when an administrator is induced to click a link. The attack requires administrator interaction and can delete widgets or subscriber data, with no demonstrated confidentiality impact.

The record

CVE
CVE-2023-45748
Published
Oct 16, 2023
Updated
Apr 28, 2026
Vendor
Mailmunch
Product
Mailmunch Forms for Mailchimp
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE 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=n/a <=3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mailmunch · Mailmunch Forms for Mailchimpversion=n/a <=3.1.4

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

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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