CVE-2020-28500

MEDIUMNVD 5.35.3—

5.3

Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 47.8%
KEV: Not listed

Published

February 15, 2021

Last Modified

November 21, 2024

References (28)

report@snykhttps://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
report@snykhttps://github.com/lodash/lodash/blob/npm/trimEnd.js%23L8
report@snykhttps://github.com/lodash/lodash/pull/5065
report@snykhttps://security.netapp.com/advisory/ntap-20210312-0006/
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGFUJIONWEBJARS-1074896
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074894
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074892
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBLODASH-1074895
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074893
report@snykhttps://snyk.io/vuln/SNYK-JS-LODASH-1018905
report@snykhttps://www.oracle.com//security-alerts/cpujul2021.html
report@snykhttps://www.oracle.com/security-alerts/cpujan2022.html
report@snykhttps://www.oracle.com/security-alerts/cpujul2022.html
report@snykhttps://www.oracle.com/security-alerts/cpuoct2021.html
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf

Vendor Advisories for CVE-2020-28500(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2022:6429
Red Hat Product SecurityHigh
Red Hat Security Advisory: Migration Toolkit for Containers (MTC) 1.7.4 security and bug fix update

Patch Availability(5)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	rhmtc/openshift-migration-ui-rhel8:v1.7.4-12	2022-09-13	redhat
redhat	cockpit-ovirt-0:0.15.1-2.el8ev	2021-09-08	redhat
redhat	openshift4/ose-thanos-rhel8:v4.8.0-202106291913.p0.git.c358e96.assembly.stream	2021-07-27	redhat
redhat	distributed-tracing/jaeger-query-rhel8:1.20.4-18	2021-06-24	redhat
redhat	ovirt-web-ui-0:1.6.9-1.el8ev	2021-06-01	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 2 ecosystems)

npm(4)

Package	Vulnerable range	Fixed in	Dependents
lodash	—	4.17.21	—
lodash-es	—	4.17.21	—
lodash.trim	—	—	—
lodash.trimend	—	—	—

RubyGems(1)

Package	Vulnerable range	Fixed in	Dependents
lodash-rails	4.0.0 ... 4.6.1 (20 versions)	4.17.21	—

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 20:49 UTCEG score recompute
2026-05-26 20:49 UTCVendor advisory
2026-05-26 13:42 UTCepss_batch
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-2020-28500?

CVE-2020-28500 is a medium vulnerability published on February 15, 2021. Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.

When was CVE-2020-28500 disclosed?

CVE-2020-28500 was first published in the National Vulnerability Database on February 15, 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-2020-28500 actively exploited?

CVE-2020-28500 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-28500?

CVE-2020-28500 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2020-28500?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28500, 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-2020-28500

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