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NVD / CVE Program· CNA mitre

CVE-2021-33320: 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 pac

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 67% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: com.liferay:com.liferay.flags.taglib (Maven) 5.0.11; com.liferay.portal:release.dxp.bom (Maven) 7.0.10.fp96, 7.1.10.fp20, 7.2.10.fp5.

Low priority for now. Upgrade to com.liferay:com.liferay.flags.taglib (Maven) 5.0.11; com.liferay.portal:release.dxp.bom (Maven) 7.0.10.fp96, 7.1.10.fp20, 7.2.10.fp5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

MediumCVSS 4.3 · v3.1—No exploit Fix available
Published
Aug 3, 2021
Updated
Jun 16, 2026
EPSS
1.1% · 67th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-33320

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
liferaydigital experience platform
liferayliferay portal

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • liferay digital experience platform7.0
  • liferay digital experience platform7.1
  • liferay digital experience platform7.2
  • liferay liferay portalbefore 7.3.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavencom.liferay:com.liferay.flags.taglibbefore 5.0.115.0.11
Mavencom.liferay.portal:release.dxp.bomfrom 7.0.0 · before 7.0.10.fp967.0.10.fp96
Mavencom.liferay.portal:release.dxp.bomfrom 7.1.0 · before 7.1.10.fp207.1.10.fp20
Mavencom.liferay.portal:release.dxp.bomfrom 7.2.0 · before 7.2.10.fp57.2.10.fp5

Same product

liferay: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-38002The workflow component in Liferay Portal 7.3.2 through 7.4.3.111, and Liferay DXP 2023.Q4.0 through 2023.Q4.5, 2023.Q3.1 through 2023.Q3.8,
    35Monitor
  • CVE-2024-26273Cross-site request forgery (CSRF) vulnerability in the content page editor in Liferay Portal 7.4.0 through 7.4.3.103, and Liferay DXP 2023.Q
    35Monitor
  • CVE-2024-26272Cross-site request forgery (CSRF) vulnerability in the content page editor in Liferay Portal 7.3.2 through 7.4.3.107, and Liferay DXP 2023.Q
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-29051May 17, 2021 · Cross-site scripting (XSS) vulnerability in the Asset module's Asset Publisher app in Liferay Portal 7.2.1 through 7.3.5, and Liferay DXP 7.
    24Monitor
  • ← EarlierCVE-2021-29049Jun 9, 2021 · Cross-site scripting (XSS) vulnerability in the Portal Workflow module's edit process page in Liferay DXP 7.0 before fix pack 99, 7.1 before
    24Monitor
  • Later →CVE-2021-33322Aug 3, 2021 · In Liferay Portal 7.3.0 and earlier, and Liferay DXP 7.0 before fix pack 96, 7.1 before fix pack 18, and 7.2 before fix pack 5, password res
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:com.liferay:com.liferay.flags.taglib5.0.11Package registry (OSV)
Maven:com.liferay.portal:release.dxp.bom7.0.10.fp96Package registry (OSV)
Maven:com.liferay.portal:release.dxp.bom7.1.10.fp20Package registry (OSV)
Maven:com.liferay.portal:release.dxp.bom7.2.10.fp5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records