What is CVE-2025-43739?

CVE-2025-43739 is a medium-severity security vulnerability in com.liferay:com.liferay.calendar.service (maven), affecting versions < 6.0.83. It is fixed in 6.0.83.

Which versions of com.liferay:com.liferay.calendar.service are affected by CVE-2025-43739?

com.liferay:com.liferay.calendar.service (maven) versions < 6.0.83 is affected.

Is there a fix for CVE-2025-43739?

Yes. CVE-2025-43739 is fixed in 6.0.83. Upgrade to this version or later.

Is CVE-2025-43739 exploitable, and should I be worried?

Whether CVE-2025-43739 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2025-43739 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2025-43739

Q: Which versions of com.liferay:com.liferay.calendar.service are affected by CVE-2025-43739?

com.liferay:com.liferay.calendar.service (maven) versions < 6.0.83 is affected.

Q: Is there a fix for CVE-2025-43739?

Yes. CVE-2025-43739 is fixed in 6.0.83. Upgrade to this version or later.

Q: Is CVE-2025-43739 exploitable, and should I be worried?

Whether CVE-2025-43739 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2025-43739 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2025-43739?

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

Summary

Liferay Portal Email Modification Vulnerability via Calendar Portlet

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.

Liferay Portal is fixed on the master branch from commit ff18e7d.

Impact

Affected versions

com.liferay:com.liferay.calendar.service (< 6.0.83)

Security releases

com.liferay:com.liferay.calendar.service → 6.0.83 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade com.liferay:com.liferay.calendar.service to 6.0.83 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2025-43739? CVE-2025-43739 is a medium-severity security vulnerability in com.liferay:com.liferay.calendar.service (maven), affecting versions < 6.0.83. It is fixed in 6.0.83.
Which versions of com.liferay:com.liferay.calendar.service are affected by CVE-2025-43739? com.liferay:com.liferay.calendar.service (maven) versions < 6.0.83 is affected.
Is there a fix for CVE-2025-43739? Yes. CVE-2025-43739 is fixed in 6.0.83. Upgrade to this version or later.
Is CVE-2025-43739 exploitable, and should I be worried? Whether CVE-2025-43739 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2025-43739 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2025-43739? Upgrade com.liferay:com.liferay.calendar.service to 6.0.83 or later.