CVE-2025-43793Network attack vector

Cookie disclosure via incorrect subdomain identification

Published Sep 15, 2025 · Updated Sep 15, 2025

Supercookie creation in Liferay Portal and Liferay DXP allows remote attackers controlling a same-TLD site to read application cookies. The domain-name handling logic incorrectly identifies the subdomain and creates a cookie whose scope extends to an attacker-controlled site under the same TLD. Exploitation requires an attacker-controlled website sharing the TLD and active victim interaction; the reported consequence is cookie disclosure only.

CVSS severity6.9
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Supercookie creation in Liferay Portal and Liferay DXP allows remote attackers controlling a same-TLD site to read application cookies. The domain-name handling logic incorrectly identifies the subdomain and creates a cookie whose scope extends to an attacker-controlled site under the same TLD. Exploitation requires an attacker-controlled website sharing the TLD and active victim interaction; the reported consequence is cookie disclosure only.

The record

CVE
CVE-2025-43793
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-1284, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=7.4.0 <=7.4.3.105

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Liferay · Liferay Portalversion=7.4.0 <=7.4.3.105
Liferay · Liferay DXPversion=2023.Q3.1 <=2023.Q3.4; version=2023.Q4.0; version=7.3.10 <=7.3.10-u35; version=7.4.13 <=7.4.13-u92

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.9Liferay Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1539Steal Web Session Cookie

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo