CVE-2021-33320

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% 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-770

Description

The Flags module in Liferay Portal 7.3.1 and earlier, and Liferay DXP 7.0 before fix pack 96, 7.1 before fix pack 20, and 7.2 before fix pack 5, does not limit the rate at which content can be flagged as inappropriate, which allows remote authenticated users to spam the site administrator with emails

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 (+84)
Liferay Portal: before 7.3.1 — fixed in 7.3.1

How to fix

Upgrade to a fixed version: Liferay Portal 7.3.1. Check the vendor advisory for mitigations.

References

https://issues.liferay.com/browse/LPE-17007
https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120747590
https://issues.liferay.com/browse/LPE-17007
https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120747590

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