CVE-2025-43739Network attack vector

Authenticated phishing via unprotected calendar email templates

Published Aug 19, 2025 · Updated Aug 19, 2025

Improper authorization in Liferay Portal and DXP allows remote authenticated users to alter calendar emails sent within an organization. Calendar notification templates lacked individual resource permissions, so the update service accepted unauthorized subject and body changes. Any authenticated account can therefore alter messages delivered to other users, enabling same-organization phishing.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Liferay Portal and DXP allows remote authenticated users to alter calendar emails sent within an organization. Calendar notification templates lacked individual resource permissions, so the update service accepted unauthorized subject and body changes. Any authenticated account can therefore alter messages delivered to other users, enabling same-organization phishing.

The record

CVE
CVE-2025-43739
Published
Aug 19, 2025
Updated
Aug 19, 2025
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-203, T1566
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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 privilegesauthenticated

What is affected?

Liferay · Liferay Portalversion=7.4.0 <=7.4.3.132
Liferay · Liferay DXPversion=2024.Q1.1 <=2024.Q1.19; version=2024Q2.0 <=2023.Q2.13; version=2024.Q3.1 <=2024.Q3.13; version=2024.Q4.0 <=2024.Q4.7; version=2025.Q1.0 <=2025.Q1.6; version=7.4.13 <=7.4.13-u92

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.3Liferay Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1566Phishing

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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