CVE-2022-42124Network attack vector

Server resource exhaustion via layout prototype name

Published Nov 15, 2022 · Updated Jul 9, 2026

ReDoS in Liferay Portal 7.3.2 through 7.4.3.4 allows remote attackers to consume server resources via crafted layout prototype names. LayoutPageTemplateEntryUpgradeProcess processes the prototype name with inefficient regular-expression behavior, causing excessive computation when a crafted name is supplied. The attack is network reachable and requires no authenticated account or user interaction; successful requests can exhaust server resources and interrupt service.

CVSS severity7.5
High
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

ReDoS in Liferay Portal 7.3.2 through 7.4.3.4 allows remote attackers to consume server resources via crafted layout prototype names. LayoutPageTemplateEntryUpgradeProcess processes the prototype name with inefficient regular-expression behavior, causing excessive computation when a crafted name is supplied. The attack is network reachable and requires no authenticated account or user interaction; successful requests can exhaust server resources and interrupt service.

The record

CVE
CVE-2022-42124
Published
Nov 15, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1333, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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-1333Inefficient Regular Expression Complexity
T1499.003Application Exhaustion

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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