CVE-2025-43739 Liferay Portal Email Modification Vulnerability via Calendar Portlet

Medium 5.3 Published Updated

Authenticated users can modify email content in the calendar portlet to send phishing emails to other users within the same organization.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2025-43739?

CVE-2025-43739 is a medium-severity vulnerability in Liferay Digital Experience Platform, published on 19 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.6, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.16 and 7.4 GA through update 92 allow any authenticated user to modify the content of emails sent through the calendar portlet, allowing an attacker to send phishing emails to any other user in the same organization.

Weakness: CWE-203

Which versions are affected by CVE-2025-43739?

2 open source packages ship an affected version, including com.liferay:com.liferay.calendar.service. It affects 2 products.

PackageAffectedFixed in
com.liferay:com.liferay.calendar.service MavenAll versions6.0.83
com.liferay:com.liferay.calendar.service MavenAll versions6.0.83

Products include Liferay Digital Experience Platform, Liferay Liferay Portal.

How do I fix CVE-2025-43739?

Upgrade com.liferay:com.liferay.calendar.service to 6.0.83 or later.

Is CVE-2025-43739 being exploited?

There is no known exploitation of CVE-2025-43739 in the wild and no public exploit code.

All Liferay Digital Experience Platform vulnerabilities

Sources

Also known as GHSA-7mxq-h2r7-h449.

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