CVE-2021-29040Network attack vector

Information disclosure via verbose web-service errors

Published May 16, 2021 · Updated Jul 9, 2026

Information exposure in Liferay Portal 7.3.4 and earlier and affected Liferay DXP 7.x releases allows remote attackers to obtain error details. The JSON web-services layer returns internal details in overly verbose error messages when it processes crafted request input. No authentication or user interaction is required; the disclosed details support reconnaissance for more focused attacks, with no direct integrity or availability impact reported.

CVSS severity5.3
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Liferay Portal 7.3.4 and earlier and affected Liferay DXP 7.x releases allows remote attackers to obtain error details. The JSON web-services layer returns internal details in overly verbose error messages when it processes crafted request input. No authentication or user interaction is required; the disclosed details support reconnaissance for more focused attacks, with no direct integrity or availability impact reported.

The record

CVE
CVE-2021-29040
Published
May 16, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-209
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 16, 2021CVE 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

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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.

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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-209Generation of Error Message Containing Sensitive Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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