Renzo Johnson Contact Form 7 Extension for Mailchimp Plugin up to 0.9.49 on WordPress insertion of sensitive information into sent data

Summaryinfo

A vulnerability classified as problematic has been found in Renzo Johnson Contact Form 7 Extension for Mailchimp Plugin up to 0.9.49 on WordPress. The impacted element is an unknown function. This manipulation causes insertion of sensitive information into sent data. This vulnerability is registered as CVE-2025-68989. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Renzo Johnson Contact Form 7 Extension for Mailchimp Plugin up to 0.9.49 on WordPress. It has been declared as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a insertion of sensitive information into sent data vulnerability. The CWE definition for the vulnerability is CWE-201. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. As an impact it is known to affect confidentiality. The summary by CVE is:

Insertion of Sensitive Information Into Sent Data vulnerability in Renzo Johnson Contact Form 7 Extension For Mailchimp contact-form-7-mailchimp-extension allows Retrieve Embedded Sensitive Data.This issue affects Contact Form 7 Extension For Mailchimp: from n/a through <= 0.9.49.

The weakness was published by Bao. The advisory is shared at vdp.patchstack.com. This vulnerability is known as CVE-2025-68989 since 12/29/2025. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/31/2025). MITRE ATT&CK project uses the attack technique T1592 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-205747). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Renzo Johnson

Name

• Contact Form 7 Extension for Mailchimp Plugin

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3
• 0.9.4
• 0.9.5
• 0.9.6
• 0.9.7
• 0.9.8
• 0.9.9
• 0.9.10
• 0.9.11
• 0.9.12
• 0.9.13
• 0.9.14
• 0.9.15
• 0.9.16
• 0.9.17
• 0.9.18
• 0.9.19
• 0.9.20
• 0.9.21
• 0.9.22
• 0.9.23
• 0.9.24
• 0.9.25
• 0.9.26
• 0.9.27
• 0.9.28
• 0.9.29
• 0.9.30
• 0.9.31
• 0.9.32
• 0.9.33
• 0.9.34
• 0.9.35
• 0.9.36
• 0.9.37
• 0.9.38
• 0.9.39
• 0.9.40
• 0.9.41
• 0.9.42
• 0.9.43
• 0.9.44
• 0.9.45
• 0.9.46
• 0.9.47
• 0.9.48
• 0.9.49

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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