CVE-2020-28500 | Regular Expression Denial of Service (ReDoS)

Exp

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

Published: 2021-02-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-28500 is rated Exploit Available (53/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.24%). 6 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-28500

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-28500

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 0.08% 0.24% +0.16%
2 2026-03-01 0.24% 0.08% -0.16%
3 2026-02-04 — 0.24% —

Full EPSS history (36 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-28500

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-28500

GitHub Security Advisory for CVE-2020-28500

GHSA-29mw-wpgm-hmr9 · Severity: medium · Ecosystem: npm — Regular Expression Denial of Service (ReDoS) in lodash

OS Trackers for CVE-2020-28500

vendor priority summary link
debian not yet assigned CVE-2020-28500 not yet assigned priority: Debian including 1 source packages (node-lodash), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-28500
redhat medium — https://access.redhat.com/security/cve/CVE-2020-28500
ubuntu medium CVE-2020-28500 medium priority: Ubuntu including 1 source packages (node-lodash), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 8, needed 5, needs-triage 2, DNE 1. https://ubuntu.com/security/CVE-2020-28500

Affected software / configurations for CVE-2020-28500

Vendor Product Version Raw CPE
lodash lodash < 4.17.21 cpe:2.3:a:lodash:lodash:*:*:*:*:*:node.js:*:*
oracle banking_corporate_lending_process_management 14.2.0 cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:*
oracle banking_corporate_lending_process_management 14.3.0 cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:*
oracle banking_corporate_lending_process_management 14.5.0 cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.5.0:*:*:*:*:*:*:*
oracle banking_credit_facilities_process_management 14.2.0 cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.2.0:*:*:*:*:*:*:*
oracle banking_credit_facilities_process_management 14.3.0 cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.3.0:*:*:*:*:*:*:*
oracle banking_credit_facilities_process_management 14.5.0 cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.5.0:*:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.2.0 cpe:2.3:a:oracle:banking_extensibility_workbench:14.2.0:*:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.3.0 cpe:2.3:a:oracle:banking_extensibility_workbench:14.3.0:*:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.5.0 cpe:2.3:a:oracle:banking_extensibility_workbench:14.5.0:*:*:*:*:*:*:*
oracle banking_supply_chain_finance 14.2.0 cpe:2.3:a:oracle:banking_supply_chain_finance:14.2.0:*:*:*:*:*:*:*
oracle banking_supply_chain_finance 14.3.0 cpe:2.3:a:oracle:banking_supply_chain_finance:14.3.0:*:*:*:*:*:*:*
oracle banking_supply_chain_finance 14.5.0 cpe:2.3:a:oracle:banking_supply_chain_finance:14.5.0:*:*:*:*:*:*:*
oracle banking_trade_finance_process_management 14.2.0 cpe:2.3:a:oracle:banking_trade_finance_process_management:14.2.0:*:*:*:*:*:*:*
oracle banking_trade_finance_process_management 14.3.0 cpe:2.3:a:oracle:banking_trade_finance_process_management:14.3.0:*:*:*:*:*:*:*
oracle banking_trade_finance_process_management 14.5.0 cpe:2.3:a:oracle:banking_trade_finance_process_management:14.5.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_policy 1.11.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.11.0:*:*:*:*:*:*:*
oracle communications_design_studio 7.4.2 cpe:2.3:a:oracle:communications_design_studio:7.4.2:*:*:*:*:*:*:*
oracle communications_services_gatekeeper 7.0 cpe:2.3:a:oracle:communications_services_gatekeeper:7.0:*:*:*:*:*:*:*
oracle communications_session_border_controller 8.4 cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:*
oracle communications_session_border_controller 9.0 cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:*
oracle enterprise_communications_broker 3.2.0 cpe:2.3:a:oracle:enterprise_communications_broker:3.2.0:*:*:*:*:*:*:*
oracle enterprise_communications_broker 3.3.0 cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.2.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.2.0:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.3.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.3.0:*:*:*:*:*:*:*
oracle health_sciences_data_management_workbench 2.5.2.1 cpe:2.3:a:oracle:health_sciences_data_management_workbench:2.5.2.1:*:*:*:*:*:*:*
oracle health_sciences_data_management_workbench 3.0.0.0 cpe:2.3:a:oracle:health_sciences_data_management_workbench:3.0.0.0:*:*:*:*:*:*:*
oracle jd_edwards_enterpriseone_tools < 9.2.6.1 cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.58 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.59 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
oracle primavera_gateway >= 17.12.0, <= 17.12.11 cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*
oracle primavera_gateway >= 18.8.0, <= 18.8.12 cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*
oracle primavera_gateway >= 19.12.0, <= 19.12.11 cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*
oracle primavera_gateway >= 20.12.0, <= 20.12.7 cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:*
oracle primavera_unifier >= 17.7, <= 17.12 cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:*
oracle primavera_unifier 18.8 cpe:2.3:a:oracle:primavera_unifier:18.8:*:*:*:*:*:*:*
oracle primavera_unifier 19.12 cpe:2.3:a:oracle:primavera_unifier:19.12:*:*:*:*:*:*:*
oracle primavera_unifier 20.12 cpe:2.3:a:oracle:primavera_unifier:20.12:*:*:*:*:*:*:*
oracle retail_customer_management_and_segmentation_foundation 19.0 cpe:2.3:a:oracle:retail_customer_management_and_segmentation_foundation:19.0:*:*:*:*:*:*:*
siemens sinec_ins < 1.0 cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:*
siemens sinec_ins 1.0 cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:*
siemens sinec_ins 1.0 cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:*

References for CVE-2020-28500

URL Tags
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
cvelogic Threat Intelligence