CVE-2025-4576Network attack vector

Unauthenticated script execution via unescaped cover image URL

Published Aug 8, 2025 · Updated Aug 8, 2025

Reflected XSS in Liferay Portal 7.4.0 through 7.4.3.133 and affected Liferay DXP releases allows remote attackers to inject JavaScript. The blogs-web entry_cover_image_caption.jsp template writes coverImageURL into a CSS background-image value without HTML-attribute escaping. No authentication or separate user action is required by the published assessment; injected script executes in the requesting browser context and can read data available there.

CVSS severity6.9
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Liferay Portal 7.4.0 through 7.4.3.133 and affected Liferay DXP releases allows remote attackers to inject JavaScript. The blogs-web entry_cover_image_caption.jsp template writes coverImageURL into a CSS background-image value without HTML-attribute escaping. No authentication or separate user action is required by the published assessment; injected script executes in the requesting browser context and can read data available there.

The record

CVE
CVE-2025-4576
Published
Aug 8, 2025
Updated
Aug 8, 2025
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.4.0 <=7.4.3.132

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Liferay · Liferay Portalversion=7.4.0 <=7.4.3.132
Liferay · Liferay DXPversion=2024.Q1.1 <=2024.Q1.15; version=2024.Q2.0 <=2024.Q2.13; version=2024.Q3.1 <=2024.Q3.13; version=2024.Q4.0 <=2024.Q4.7; version=2025.Q1.0 <=2025.Q1.4; version=7.4.13 <=7.4.13-u92

Published CVSS scores

6.9GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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