CVE-2021-33337

Liferay Portal and Liferay DXP Cross-site scripting (XSS) vulnerability in the Document Library module

6.1 MediumFix available

Cross-site scripting (XSS) vulnerability in the Document Library module's add document menu in Liferay Portal 7.3.0 through 7.3.4, and Liferay DXP 7.1 before fix pack 20, and 7.2 before fix pack 9, allows remote attackers to inject arbitrary web script or HTML via the _com_liferay_document_library_web_portlet_DLAdminPortlet_name parameter.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.80%Unchanged since Aug 5, 2021

What each source reports

NVD Score used 6.1

Record: CVE-2021-33337
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-33337
Updated: 2026-11-02

EUVDEUVD-2021-20045 No score

Record: EUVD-2021-20045
Updated: 2026-11-03

GitHub AdvisoriesGHSA-v88g-7fx4-9q7f 6.1

Liferay Portal and Liferay DXP Cross-site scripting (XSS) vulnerability in the Document Library module

Cross-site scripting (XSS) vulnerability in the Document Library module's add document menu versions 5.0.6 to before 5.0.54, in Liferay Portal 7.3.0 through 7.3.4, and Liferay DXP 7.1 before fix pack 20, and 7.2 before fix pack 9, allows remote attackers to inject arbitrary web script or HTML via the _com_liferay_document_library_web_portlet_DLAdminPortlet_name parameter.

Record: GHSA-v88g-7fx4-9q7f
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

Record: CVE-2021-33337
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-v88g-7fx4-9q7f 6.1

Liferay Portal and Liferay DXP Cross-site scripting (XSS) vulnerability in the Document Library module

Record: GHSA-v88g-7fx4-9q7f
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`com.liferay:com.liferay.document.library.web` Maven	5.0.6 up to 5.0.54	5.0.54
`com.liferay.portal:release.dxp.bom` Maven	7.1.0 up to 7.1.10.fp20	7.1.10.fp20
`com.liferay.portal:release.dxp.bom` Maven	7.2.0 up to 7.2.10.fp9	7.2.10.fp9
`com.liferay:com.liferay.document.library.web` Maven	5.0.6 up to 5.0.54, plus listed versions 5.0.105.0.115.0.125.0.135.0.14 Show 42 moreShow less 5.0.155.0.165.0.175.0.185.0.195.0.205.0.215.0.225.0.235.0.245.0.255.0.265.0.275.0.285.0.295.0.305.0.315.0.325.0.335.0.345.0.355.0.365.0.375.0.385.0.395.0.405.0.415.0.425.0.435.0.445.0.455.0.465.0.475.0.485.0.495.0.505.0.515.0.525.0.535.0.75.0.85.0.9	5.0.54
`com.liferay.portal:release.dxp.bom` Maven	7.1.0 up to 7.1.10.fp20, plus listed versions 7.1.107.1.10.fp17.1.10.fp107.1.10.fp117.1.10.fp12 Show 15 moreShow less 7.1.10.fp137.1.10.fp147.1.10.fp157.1.10.fp167.1.10.fp177.1.10.fp187.1.10.fp197.1.10.fp27.1.10.fp37.1.10.fp47.1.10.fp57.1.10.fp67.1.10.fp77.1.10.fp87.1.10.fp9	7.1.10.fp20
`com.liferay.portal:release.dxp.bom` Maven	7.2.0 up to 7.2.10.fp9, plus listed versions 7.2.17.2.107.2.10.fp17.2.10.fp1-17.2.10.fp2 Show 6 moreShow less 7.2.10.fp37.2.10.fp47.2.10.fp57.2.10.fp67.2.10.fp77.2.10.fp8	7.2.10.fp9

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-33337 is a medium vulnerability (CVSS 6.1) in Liferay Portal, published August 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 57th percentile. Fixed in com.liferay:com.liferay.document.library.web 5.0.54.