CVE-2026-39791
Received Received - Intake

Unauthenticated Sensitive Data Exposure in Mailjet Email Marketing

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Patchstack

Description
Unauthenticated Sensitive Data Exposure in Mailjet Email Marketing <= 6.2.3 versions.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-39791
EUVD
EUVD-2026-93035

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Mailjet Mailjet Email Marketing n/a

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

Attack-Flow Graph

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Executive Summary

CVE-2026-39791 is an unauthenticated sensitive data exposure vulnerability in the Mailjet Email Marketing WordPress plugin versions 6.2.3 and below. It allows unauthorized parties to access private information such as passwords, emails, or payment details due to improper data protection.

Impact Analysis

This vulnerability could expose sensitive user data like passwords, emails, or payment details to attackers. While the CVSS score is low (5.3), exploitation could lead to privacy breaches, identity theft, or financial fraud if the exposed data is misused.

Compliance Impact

This vulnerability could violate GDPR and HIPAA compliance requirements by exposing personal and sensitive data without authorization. Organizations may face legal penalties, fines, or reputational damage if they fail to protect user data adequately.

Mitigation Strategies

Immediately update the Mailjet Email Marketing Plugin to the latest version if available. If no patch exists, contact your hosting provider or web developer for assistance. Disable the plugin temporarily if updates are not possible to prevent exposure of sensitive data.

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