CVE-2023-42498Network attack vector

Reflected XSS via unescaped language override key

Published Feb 21, 2024 · Updated Aug 2, 2024

Reflected XSS in affected Liferay Portal and DXP releases allows remote attackers to inject script through a Language Override key. The edit screen places the _com_liferay_portal_language_override_web_internal_portlet_PLOPortlet_key parameter into page output without neutralizing attacker-controlled HTML or script. Exploitation requires a user to open the crafted request, causing attacker-supplied code to run in the Liferay origin.

CVSS severity9.6
Critical
EPSS probability0.61%
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 affected Liferay Portal and DXP releases allows remote attackers to inject script through a Language Override key. The edit screen places the _com_liferay_portal_language_override_web_internal_portlet_PLOPortlet_key parameter into page output without neutralizing attacker-controlled HTML or script. Exploitation requires a user to open the crafted request, causing attacker-supplied code to run in the Liferay origin.

The record

CVE
CVE-2023-42498
Published
Feb 21, 2024
Updated
Aug 2, 2024
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=7.4.3.8 <=7.4.3.97

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Liferay · Liferay Portalversion=7.4.3.8 <=7.4.3.97
Liferay · Liferay DXPversion=2023.q3.1 <=2023.q3.4; version=7.4.13.u4 <=7.4.13.u92

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
9.6Liferay Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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