CVE-2021-33337

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Cross-site scripting (XSS) vulnerability in the Document Library module's add document menu in Liferay Portal 7.3.0 through 7.3.4, and Liferay DXP 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 _com_liferay_document_library_web_portlet_DLAdminPortlet_name parameter.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
53.1%
KEV
Not listed

Published

August 4, 2021

Last Modified

May 13, 2025

References (4)

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFixed inDependents
com.liferay:com.liferay.document.library.web5.0.10 ... 5.0.9 (48 versions)5.0.54—
com.liferay.portal:release.dxp.bom7.2.1 ... 7.2.10.fp8 (11 versions)7.2.10.fp9—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 22:48 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
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  10. 2026-07-18 15:29 UTCOSV refresh
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  1. 2026-07-06 16:25 UTCEPSS rescore
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  38. 2026-06-13 00:46 UTCOSV refresh
  39. 2026-06-12 23:10 UTCEPSS rescore
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  42. 2026-06-10 22:16 UTCEPSS rescore
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  72. 2026-05-26 12:41 UTCEG score recompute
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-33337?
CVE-2021-33337 is a medium vulnerability published on August 4, 2021. Cross-site scripting (XSS) vulnerability in the Document Library module's add document menu in Liferay Portal 7.3.0 through 7.3.4, and Liferay DXP 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…
When was CVE-2021-33337 disclosed?
CVE-2021-33337 was first published in the National Vulnerability Database on August 4, 2021, with the most recent update on May 13, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-33337 actively exploited?
CVE-2021-33337 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-33337?
CVE-2021-33337 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2021-33337?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-33337, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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