CVE-2025-43820

CVE-2025-43820 is a medium-severity vulnerability in Liferay Digital Experience Platform with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

• Severity: Medium (CVSS 3.x base score 5.4)
• CVSS v4: 4.8
• EPSS exploit prediction: 0% (10th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2025-31649
• Weakness: CWE-79
• Affected product: Liferay Digital Experience Platform
• Published: 2025-09-29
• Last modified: 2026-06-17

Description

Multiple cross-site scripting (XSS) vulnerabilities in the Calendar widget when inviting users to a event 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 35 allow remote attackers to inject arbitrary web script or HTML via a crafted payload injected into a user’s (1) First Name, (2) Middle text, or (3) Last Name text fields.

Frequently asked questions

What is CVE-2025-43820?

Multiple cross-site scripting (XSS) vulnerabilities in the Calendar widget when inviting users to a event 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 35 allow remote attackers to inject arbitrary web script or HTML via a crafted payload injected into a user’s (1) First Name, (2) Middle text, or (3) Last Name text fields.

How severe is CVE-2025-43820?

CVE-2025-43820 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-43820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43820?

CVE-2025-43820 primarily affects Liferay Digital Experience Platform. In total, 72 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-43820?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-43820 have an EU (EUVD) identifier?

Yes. CVE-2025-43820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31649.

When was CVE-2025-43820 published?

CVE-2025-43820 was published on 2025-09-29 and last updated on 2026-06-17.

References

• https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43820

Affected products (72)

• cpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update25:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update26:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update27:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update28:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update29:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update30:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update31:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update32:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update33:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update34:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update35:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.3:update36:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update35:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update36:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update37:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update38:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update39:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update40:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update41:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update42:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update43:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update44:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update45:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update46:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update47:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update48:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update49:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update50:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update51:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update52:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update53:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update54:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update55:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update56:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update57:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update58:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update59:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update60:*:*:*:*:*:*
• cpe:2.3:a:liferay:digital_experience_platform:7.4:update61:*:*:*:*:*:*

More vulnerabilities in Liferay Digital Experience Platform

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• CVE-2024-26269 — Critical (CVSS 9.6): Cross-site scripting (XSS) vulnerability in the Frontend JS module's portlet.js in Liferay Portal 7.2.0 through…
• CVE-2023-42498 — Critical (CVSS 9.6): Reflected cross-site scripting (XSS) vulnerability in the Language Override edit screen in Liferay Portal 7.4.3.8…
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