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Liferay Portal CVE-2025-43766

MEDIUM
Unrestricted Upload of File with Dangerous Type (CWE-434)
2025-08-23 security@liferay.com
RCE File Upload Digital Experience Platform Liferay Portal Liferay
6.8
CVSS 4.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-434
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK

2 techniques across 2 tactics: Command and Control, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required. EPSS exploitation probability: 0.14%.
Exploit ScenarioDerived

A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

The Liferay Portal 7.4.0 through 7.3.3.131, and Liferay DXP 2024.Q4.0, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12 and 7.4 GA through update 92 allows the. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

Affected Packages

maven com.liferay:com.liferay.style.book.web fix: 2.0.117

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Technical ContextAI · show details

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. The Liferay Portal 7.4.0 through 7.3.3.131, and Liferay DXP 2024.Q4.0, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12 and 7.4 GA through update 92 allows the upload of unrestricted files in the style books component that are processed within the environment enabling arbitrary code execution by attackers. Affected products include: Liferay Digital Experience Platform, Liferay Liferay Portal. Version information: through 7.3.3.131.

Severity by source

NVD PRIMARY 6.8 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Active
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
High
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
CVE Published
Aug 23, 2025 - 05:15 nvd
MEDIUM 6.8

DescriptionCVE.org

The Liferay Portal 7.4.0 through 7.3.3.131, and Liferay DXP 2024.Q4.0, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12 and 7.4 GA through update 92 allows the upload of unrestricted files in the style books component that are processed within the environment enabling arbitrary code execution by attackers.

Executive ViewAI

Why It Matters

CVE-2025-43766 presents notable security risk, a unrestricted file upload vulnerability rated CVSS 6.8. This could allow unauthorized file access. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate
Compensating Controls

Apply vendor patch. If patching is delayed: restrict file access via WAF, implement allowlists.

Threat Intelligence Overview

EPSS Score
0.1%
Top 66% exploitable

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:-:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update1:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update10:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update11:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update12:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update13:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update14:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update15:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update16:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update17:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update18:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update19:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update2:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update20:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update21:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update22:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update23:*:*:*:*:*:*
+ 78 more

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References

Advisories & patches
ADVISORY https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43766

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