Liferay Portal Fragment Module and Liferay DXP Vulnerable to Cross-Site Scripting

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.8 · CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS

• CVE-2021-33339: 0.67% estimated exploitation activity in the next 30 days; percentile 52.01 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Cross-site scripting (XSS) vulnerability in the Fragment module in Liferay Portal 7.2.1 through 7.3.4, and Liferay DXP 7.2 before fix pack 9 allows remote attackers to inject arbitrary web script or HTML via the comliferaysiteadminwebportletSiteAdminPortletname parameter.

Published by the source

24 May 2022, 19:10 UTC

Last modified by the source

28 May 2025, 20:15 UTC

Source last checked

26 Oct 2026, 16:36 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-7pxh-q6jw-6xj8

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# Patch Next advisory brief: CVE-2021-33339

Advisory: Liferay Portal Fragment Module and Liferay DXP Vulnerable to Cross-Site Scripting
IDs: CVE-2021-33339, GHSA-7pxh-q6jw-6xj8
Record: https://patchnext.com/advisories/cve-2021-33339 (revision 1, source checked 26 Oct 2026, 16:36 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: com.liferay.portal:release.portal.bom 7.3.5; com.liferay.portal:release.dxp.bom 7.2.10.fp9. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven com.liferay.portal:release.portal.bom: affected >= 7.2.1, <= 7.3.4; fixed in 7.3.5
- Maven com.liferay.portal:release.dxp.bom: affected >= 7.2.0, < 7.2.10.fp9; fixed in 7.2.10.fp9

## Suggested inspection (read-only)
- Maven com.liferay.portal:release.portal.bom: check the installed version with your package manager.
- Maven com.liferay.portal:release.dxp.bom: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on com.liferay.portal:release.portal.bom, com.liferay.portal:release.dxp.bom.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-7pxh-q6jw-6xj8 (GitHub-reviewed advisory GHSA-7pxh-q6jw-6xj8 lists affected ranges: Maven com.liferay.portal:release.portal.bom >=7.2.1 =7.2.0 <7.2.10.fp9)

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