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CVE-2021-33320: Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate

May 24, 2022 (updated July 14, 2025)

The Flags module before version 5.0.11 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

References

  • github.com/advisories/GHSA-wg4x-hf94-fj5v
  • github.com/liferay/liferay-portal
  • issues.liferay.com/browse/LPE-17007
  • liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/cve-2021-33320-flagging-content-as-inappropriate-is-not-rate-limited?p_r_p_assetEntryId=121611464&_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_jekt_redirect=https%3A%2F%2Fliferay.dev%3A443%2Fportal%2Fsecurity%2Fknown-vulnerabilities%3Fp_p_id%3Dcom_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_jekt%26p_p_lifecycle%3D0%26p_p_state%3Dnormal%26p_p_mode%3Dview%26p_r_p_assetEntryId%3D121611464%26_com_liferay_asset_publisher_web_portlet_AssetPublisherPortlet_INSTANCE_jekt_cur%3D0%26p_r_p_resetCur%3Dfalse
  • nvd.nist.gov/vuln/detail/CVE-2021-33320

Code Behaviors & Features

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Affected versions

All versions before 5.0.11

Fixed versions

  • 5.0.11

Solution

Upgrade to version 5.0.11 or above.

Impact 4.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Learn more about CVSS

Weakness

  • CWE-770: Allocation of Resources Without Limits or Throttling

Source file

maven/com.liferay/com.liferay.flags.taglib/CVE-2021-33320.yml

Spotted a mistake? Edit the file on GitLab.

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