How severe is CVE-2025-43734?

CVE-2025-43734 has a CVSS score of 5.4/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2025-43734?

CVE-2025-43734 affects the following packages: com.liferay.portal:release.portal.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay.portal:release.dxp.bom (Maven), com.liferay:com.liferay.frontend.taglib.clay (Maven). Ecosystems affected: Maven.

How do I fix CVE-2025-43734?

A fix is available for CVE-2025-43734; check the affected-versions list above or the advisory for the patched release of com.liferay.portal:release.portal.bom, then make sure no transitive dependency still pins the vulnerable range.

How do I detect CVE-2025-43734 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:release.portal.bom, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-43734 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2025-43734 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-43734 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-43734?

CVE-2025-43734 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 15th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-43734?

CVE-2025-43734 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-43734 published, and has it been updated?

CVE-2025-43734 was published on August 12, 2025 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2025-43734 — release.portal.bom

MEDIUMFix: liferay/liferay-portal@b4ca1bb

CVE-2025-43734 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in com.liferay.portal:release.portal.bom. A fix is available for com.liferay.portal:release.portal.bom — see the affected versions and patch details below.

Liferay Portal 7.4.0 and Liferay DXP have a reflected cross-site scripting (XSS) vulnerability

Also known asGHSA-m5c7-5gv3-hcpf

Published

Aug 12, 2025

Updated

Oct 24, 2026

Affected

8 pkgs

Patched

3 / 8

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-43734.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk+0.02%

Lower risk than most CVEs15th percentile — riskier than 15% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

8 pkgs affected

☕com.liferay.portal:release.portal.bom☕com.liferay.portal:release.dxp.bom☕com.liferay.portal:release.dxp.bom☕com.liferay.portal:release.dxp.bom☕com.liferay.portal:release.dxp.bom☕com.liferay.portal:release.dxp.bom☕com.liferay.portal:release.dxp.bom☕com.liferay:com.liferay.frontend.taglib.clay

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

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.

Affected Packages

8 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.liferay.portal:release.portal.bom`	≥ 7.4.0	No fix
☕Maven	`com.liferay.portal:release.dxp.bom`	≥ 2024.q4.0	No fix
☕Maven	`com.liferay.portal:release.dxp.bom`	≥ 2024.q3.0	No fix
☕Maven	`com.liferay.portal:release.dxp.bom`	≥ 2024.q2.0	No fix
☕Maven	`com.liferay.portal:release.dxp.bom`	≥ 2024.q1.0&&< 2024.q1.17	2024.q1.17`com.liferay.portal:release.dxp.bom:2024.q1.17`
☕Maven	`com.liferay.portal:release.dxp.bom`	≥ 2025.q1.0&&< 2025.q1.11	2025.q1.11`com.liferay.portal:release.dxp.bom:2025.q1.11`

Affected Products

2 products · 7 configurations

Application

digital experience platformliferay

≥ 2025.q1.0 && ≤ 2025.q1.10

1 version

7.4

Application

liferay portalliferay

≥ 7.4.0 && ≤ 7.4.3.132

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:release.portal.bom, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
A fix is available for CVE-2025-43734; check the affected-versions list above or the advisory for the patched release of com.liferay.portal:release.portal.bom, then make sure no transitive dependency still pins the vulnerable range.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2025-43734 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

5.4/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

liferay-portal

2.5/10

Code-Review0/10

Maintained10/10

Branch-Protection0/10

Assessed Nov 9, 2026

Timeline

Disclosed

Aug 12, 2025

Last updated

Oct 24, 2026

Identifiers

CVE-2025-43734

GHSA-m5c7-5gv3-hcpf

References

Advisoryliferay.dev · CVE 2025 43734 Advisorynvd.nist.gov · CVE 2025 43734 Webgithub.com · b4ca1bb0961cc1f230508e072c30815eabce062f Webliferay.atlassian.net · LPE 18234 Packagegithub.com · liferay portal

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs affecting release.portal.bom are rated as high or higher (top: high).

CVE-2025-62264CVE-2025-62265CVE-2025-62257CVE-2025-62266CVE-2025-62258CVE-2025-62259CVE-2025-62260CVE-2025-62261

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026