How to fix CVE-2025-43734?

Within 30 days: Identify affected systems running the Liferay Portal 7.4.0 and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is Digital Experience Platform affected by CVE-2025-43734?

Organizations using the Liferay Portal 7.4.0 should be aware of moderate risk from CVE-2025-43734, a cross-site scripting vulnerability rated CVSS 5.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

CVE-2025-43734

MEDIUM

2025-08-12 [email protected]

5.1

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Patch Released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

CVE Published

Aug 12, 2025 - 19:15 nvd

MEDIUM 5.1

Description

A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.10, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.1 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.16 and 7.4 GA through update 92 allows a remote authenticated attacker to inject JavaScript code in the “first display label” field in the configuration of a custom sort widget. This malicious payload is then reflected and executed by clay button taglib when refreshing the page.

Analysis

A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.10, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.10, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.1 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.16 and 7.4 GA through update 92 allows a remote authenticated attacker to inject JavaScript code in the “first display label” field in the configuration of a custom sort widget. This malicious payload is then reflected and executed by clay button taglib when refreshing the page. Affected products include: Liferay Digital Experience Platform, Liferay Liferay Portal. Version information: through 7.4.3.132.

Affected Products

Liferay Digital Experience Platform, Liferay Liferay Portal.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +26

POC: 0

CVE-2025-43734 vulnerability details – vuln.today

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CVE-2025-43734

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CVE-2025-43734

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code