CVE-2025-43766Network attack vector

Authenticated code execution via unrestricted preview upload

Published Aug 23, 2025 · Updated Aug 23, 2025

Unrestricted file upload in Liferay Portal and DXP style books allows remote authenticated users to execute arbitrary code. UpdateStyleBookEntryPreviewMVCActionCommand copied a selected preview FileEntry into the style book repository without restricting its extension or requiring an image MIME type. Exploitation requires high privileges and active interaction with the preview workflow; successful uploads run code in the server environment.

CVSS severity6.8
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Liferay Portal and DXP style books allows remote authenticated users to execute arbitrary code. UpdateStyleBookEntryPreviewMVCActionCommand copied a selected preview FileEntry into the style book repository without restricting its extension or requiring an image MIME type. Exploitation requires high privileges and active interaction with the preview workflow; successful uploads run code in the server environment.

The record

CVE
CVE-2025-43766
Published
Aug 23, 2025
Updated
Aug 23, 2025
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 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=7.4.3.0 <=7.4.3.131

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Liferay · Liferay Portalversion=7.4.3.0 <=7.4.3.131
Liferay · Liferay DXPversion=2024.Q1.1 <=2024.Q1.12; version=2024.Q2.0 <=2024.Q2.13; version=2024.Q3.1 <=2024.Q3.13; version=2024.Q4.0; version=7.4.13 <=7.4.13-u92

Published CVSS scores

6.8LiferayCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

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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