CVE-2025-62254Network attack vector

Unauthenticated denial of service via unbounded file combination

Published Oct 23, 2025 · Updated Oct 23, 2025

Resource exhaustion in Liferay Portal and Liferay DXP allows remote attackers to interrupt service through ComboServlet requests. ComboServlet accepts query-string module paths and retrieves every requested resource before enforcing a per-request file-count limit, allowing an oversized combined response. No authentication or user interaction is required; repeated requests consume server and network resources without affecting data confidentiality or integrity.

CVSS severity6.9
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Liferay Portal and Liferay DXP allows remote attackers to interrupt service through ComboServlet requests. ComboServlet accepts query-string module paths and retrieves every requested resource before enforcing a per-request file-count limit, allowing an oversized combined response. No authentication or user interaction is required; repeated requests consume server and network resources without affecting data confidentiality or integrity.

The record

CVE
CVE-2025-62254
Published
Oct 23, 2025
Updated
Oct 23, 2025
Vendor
Liferay
Product
Liferay Portal
Classifications
CWE-22, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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 <=7.4.3.111

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Liferay · Liferay Portalversion=7.4.0 <=7.4.3.111
Liferay · Liferay DXPversion=2023.Q3.1 <=2023.Q3.5; version=2023.Q4.0 <=2023.Q4.2; version=7.3.10 <=7.3.10-u35; version=7.4.13 <=7.4.13-u92

Published CVSS scores

6.9Liferay Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
7.5NIST NVDCVSS: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.

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1499Endpoint Denial of Service

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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