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CVE-2021-33320

Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate

4.3 MediumFix available

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

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

1.16%Up 0.4 points since Aug 4, 2021
90%50%10%1%

What each source reports

NVD Score used 4.3

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

Record
CVE-2021-33320
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness
CWE-770
Updated
2026-11-02
CVE List No score

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

Record
CVE-2021-33320
Updated
2026-11-02
EUVDEUVD-2021-20029 No score

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

Record
EUVD-2021-20029
Updated
2026-11-03
GitHub AdvisoriesGHSA-wg4x-hf94-fj5v 4.3

Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate

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

Record
GHSA-wg4x-hf94-fj5v
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-770
Updated
2026-11-02
OSV 4.3

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

Record
CVE-2021-33320
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVGHSA-wg4x-hf94-fj5v 4.3

Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate

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

Record
GHSA-wg4x-hf94-fj5v
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-770
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
com.liferay:com.liferay.flags.taglib
Maven
 before 5.0.11
5.0.11
com.liferay.portal:release.dxp.bom
Maven
 7.0.0 up to 7.0.10.fp96
7.0.10.fp96
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.fp5
7.2.10.fp5
com.liferay:com.liferay.flags.taglib
Maven
 before 5.0.11, plus listed versions
1.0.02.0.02.0.12.0.102.0.11
Show 45 moreShow less
2.0.22.0.32.0.42.0.52.0.62.0.72.0.82.0.92.1.02.1.12.1.22.1.32.1.42.1.52.1.62.1.72.1.83.0.03.0.13.0.103.0.113.0.123.0.133.0.23.0.33.0.43.0.53.0.63.0.73.0.83.0.93.1.03.1.13.1.23.1.33.1.43.1.53.2.03.2.13.2.103.2.113.2.123.2.133.2.143.2.15
5.0.11
com.liferay.portal:release.dxp.bom
Maven
 7.0.0 up to 7.0.10.fp96, plus listed versions
7.0.10.fp607.0.10.fp617.0.10.fp627.0.10.fp637.0.10.fp64
Show 36 moreShow less
7.0.10.fp657.0.10.fp667.0.10.fp677.0.10.fp687.0.10.fp697.0.10.fp707.0.10.fp717.0.10.fp727.0.10.fp737.0.10.fp747.0.10.fp757.0.10.fp767.0.10.fp777.0.10.fp787.0.10.fp797.0.10.fp807.0.10.fp817.0.10.fp827.0.10.fp837.0.10.fp847.0.10.fp857.0.10.fp85-17.0.10.fp867.0.10.fp86-17.0.10.fp877.0.10.fp87-17.0.10.fp887.0.10.fp897.0.10.fp907.0.10.fp917.0.10.fp927.0.10.fp947.0.10.fp94-17.0.10.fp957.0.10.fp95-17.0.10.fp95-2
7.0.10.fp96
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.fp5, plus listed versions
7.2.17.2.107.2.10.fp17.2.10.fp1-17.2.10.fp27.2.10.fp37.2.10.fp4
7.2.10.fp5

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2021-33320 is a medium vulnerability (CVSS 4.3) in Liferay Portal, published August 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.16%, the 67th percentile. Fixed in com.liferay:com.liferay.flags.taglib 5.0.11.

References

This page doesn't list everything

Left out here: 91 versions. The JSON record has them.

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