What’s Vulnerable › Vulnerabilities

CVE-2021-33336

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-04 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in the Journal module's add article menu in Liferay Portal 7.3.0 through 7.3.3, and Liferay DXP 7.1 fix pack 18, and 7.2 fix pack 5 through 7, allows remote attackers to inject arbitrary web script or HTML via the _com_liferay_journal_web_portlet_JournalPortlet_name parameter.

Affected products

• Liferay Digital Experience Platform: 7.1, 7.1-fix_pack_1, 7.1-fix_pack_10, 7.1-fix_pack_11, 7.1-fix_pack_12, 7.1-fix_pack_13 (+15)
• Liferay Portal: from 7.3.0 before 7.3.4 — fixed in 7.3.4

How to fix

Upgrade to a fixed version: Liferay Portal 7.3.4. Check the vendor advisory for mitigations.

References

• https://issues.liferay.com/browse/LPE-17078
• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/cve-2021-33336-stored-xss-with-structure-name
• https://issues.liferay.com/browse/LPE-17078
• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/cve-2021-33336-stored-xss-with-structure-name

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