Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-28500

CVE-2020-28500MEDIUM

n/a Lodash — Regular Expression Denial of Service (ReDoS)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  L    5.3   .0734   94.3     —

AFFECTED
  Product  Versions                     Fixed
  Lodash   versions prior to 4.17.21 –  —

TIMELINE
  Nov 12  Reserved by snyk
  Feb 15  Published (CNA: snyk)
  Oct 8   EXPLOIT PUBLISHED — CVE-2020-28500 (Lodash). Public exploit reference added.

CNA: snyk · CVSS v3.1 · 14 references · NVD status: Modified

Description

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

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
November 12, 2020	Reserved	Reserved by snyk
February 15, 2021	Published	Published (CNA: snyk)
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-28500 (Lodash). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	Lodash	—	versions prior to 4.17.21	—

References (14)

https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf [Patch, Third Party Advisory]
https://github.com/lodash/lodash/blob/npm/trimEnd.js%23L8 [Broken Link]
https://github.com/lodash/lodash/pull/5065 [Patch, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20210312-0006/ [Third Party Advisory]
https://snyk.io/vuln/SNYK-JAVA-ORGFUJIONWEBJARS-1074896 [Exploit, Third Party Advisory]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074894 [Exploit, Third Party Advisory]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074892 [Exploit, Third Party Advisory]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBLODASH-1074895 [Exploit, Third Party Advisory]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074893 [Exploit, Third Party Advisory]
https://snyk.io/vuln/SNYK-JS-LODASH-1018905 [Exploit, Third Party Advisory]
https://www.oracle.com//security-alerts/cpujul2021.html [Not Applicable, Third Party Advisory]
https://www.oracle.com/security-alerts/cpujan2022.html [Patch, Third Party Advisory]
https://www.oracle.com/security-alerts/cpujul2022.html [Patch, Third Party Advisory]
https://www.oracle.com/security-alerts/cpuoct2021.html [Patch, Third Party Advisory]

Authoritative record: CVE-2020-28500 at cve.org

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-28500 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.