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CVE-2025-43818

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Date: September 29, 2025

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

Severity Score

Related Resources (7)

https://github.com/liferay/liferay-portal
https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43818
https://github.com/liferay/liferay-portal/commit/ff1d01a6bd2898e827b1efdf723ef24f7f2bb1bf
https://github.com/liferay/liferay-portal/commit/ed066f19934a721a7f9b567db097e04cf4adbdae
https://liferay.atlassian.net/browse/LPE-17911
https://nvd.nist.gov/vuln/detail/CVE-2025-43818
https://www.mend.io/vulnerability-database/CVE-2025-43818

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade Version

Upgrade to version com.liferay:com.liferay.calendar.web:5.0.87

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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