CVE-2021-33326

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-03 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in the Frontend JS module in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 96, 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 title of a modal window.

Affected products

Liferay Digital Experience Platform: 7.0, 7.0-fix_pack_13, 7.0-fix_pack_14, 7.0-fix_pack_24, 7.0-fix_pack_25, 7.0-fix_pack_26 (+88)
Liferay Portal: before 7.3.5 — fixed in 7.3.5

How to fix

Upgrade to a fixed version: Liferay Portal 7.3.5. Check the vendor advisory for mitigations.

References

https://issues.liferay.com/browse/LPE-17093
https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120747869
https://issues.liferay.com/browse/LPE-17093
https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120747869

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