CVE-2025-43739

Liferay Portal Email Modification Vulnerability via Calendar Portlet

5.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.31%Up 0.3 points since Aug 20, 2025

What each source reports

CVE List Score used 5.3

Record: CVE-2025-43739
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness: CWE-203
Updated: 2026-11-02

EUVDEUVD-2025-25166 5.3

Record: EUVD-2025-25166
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-7mxq-h2r7-h449 5.3

Liferay Portal Email Modification Vulnerability via Calendar Portlet

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

Record: GHSA-7mxq-h2r7-h449
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness: CWE-203
Updated: 2026-11-02

NVD 5.3

Record: CVE-2025-43739
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-203
Updated: 2026-11-02

OSV 4.3

Record: CVE-2025-43739
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-02

OSVGHSA-7mxq-h2r7-h449 5.3

Liferay Portal Email Modification Vulnerability via Calendar Portlet

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

Record: GHSA-7mxq-h2r7-h449
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness: CWE-203
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`com.liferay:com.liferay.calendar.service` Maven	before 6.0.83	6.0.83
`com.liferay:com.liferay.calendar.service` Maven	before 6.0.83, plus listed versions 1.0.01.0.11.0.21.0.31.1.0 Show 45 moreShow less 2.0.02.0.12.0.22.0.32.0.42.0.52.1.02.1.12.1.102.1.112.1.122.1.132.1.142.1.152.1.162.1.172.1.182.1.192.1.22.1.202.1.212.1.222.1.232.1.242.1.252.1.262.1.272.1.282.1.292.1.32.1.302.1.312.1.322.1.332.1.42.1.52.1.62.1.72.1.82.1.92.10.02.10.12.11.02.11.12.11.10	6.0.83

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-43739 is a medium vulnerability (CVSS 5.3) in Liferay Dxp, published August 19, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. Fixed in com.liferay:com.liferay.calendar.service 6.0.83.

References

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This page doesn't list everything

Left out here: 454 versions. The JSON record has them.