CVE-2021-28162

MEDIUMNVD 6.16.1—

6.1

In Eclipse Theia versions up to and including 0.16.0, in the notification messages there is no HTML escaping, so Javascript code can run.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 38.3%
KEV: Not listed

Published

March 12, 2021

Last Modified

November 21, 2024

References (2)

emo@eclipsehttps://github.com/eclipse-theia/theia/issues/7283
af854a3a-2127-422b-91ae-364da2661108https://github.com/eclipse-theia/theia/issues/7283

Affected Packages

(1 across 1 ecosystem)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
@theia/messages	—	1.0.0	—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 19:47 UTCEG score recompute
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28162?

CVE-2021-28162 is a medium vulnerability published on March 12, 2021. In Eclipse Theia versions up to and including 0.16.0, in the notification messages there is no HTML escaping, so Javascript code can run.

When was CVE-2021-28162 disclosed?

CVE-2021-28162 was first published in the National Vulnerability Database on March 12, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-28162 actively exploited?

CVE-2021-28162 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28162?

CVE-2021-28162 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2021-28162?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28162, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-28162

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