XSS in Liferay Digital Experience Platform

CVE-2025-43818

Cross-site scripting (XSS) vulnerability in the Calendar widget in Liferay Portal 7.4.3.35 through 7.4.3.110, and Liferay DXP 2023.Q4.0 through 2023.Q4.4, 2023.Q3.1 through 2023.Q3.6, 7.4 update 35 through update 92, and 7.3 update 25 through update 36 allows remote attackers to inject arbitrary web script or HTML via a crafted payload injected into a Calendar's “Name” text field

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (11.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-43818: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-43818?
CVE-2025-43818 is a medium-severity vulnerability in Liferay Digital Experience Platform, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-09-29.
How severe is CVE-2025-43818?
Medium severity. CVSS v3 base score is 6.1 out of 10.