CVE-2021-29046Network attack vector

Stored XSS via unsanitized category title parameter

Published May 17, 2021 · Updated Jul 9, 2026

Stored XSS in Liferay Portal 7.3.5 and Liferay DXP 7.3 before fix pack 1 allows remote attackers to inject script through a category title. The Asset module's category selector accepts the _com_liferay_asset_categories_admin_web_portlet_AssetCategoriesAdminPortlet_title parameter and renders its unneutralized value as web content. Exploitation requires a victim to view the stored category name, after which attacker-controlled script runs in that user's browser context and can read or alter accessible page data.

CVSS severity6.1
Medium
EPSS probability0.88%
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

Stored XSS in Liferay Portal 7.3.5 and Liferay DXP 7.3 before fix pack 1 allows remote attackers to inject script through a category title. The Asset module's category selector accepts the _com_liferay_asset_categories_admin_web_portlet_AssetCategoriesAdminPortlet_title parameter and renders its unneutralized value as web content. Exploitation requires a victim to view the stored category name, after which attacker-controlled script runs in that user's browser context and can read or alter accessible page data.

The record

CVE
CVE-2021-29046
Published
May 17, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 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

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

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

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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')
T1059.007JavaScript/JScript

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