Prototype Pollution in lodash

published 2019-07-10 7 y ago modified 2026-09-10 1 mo ago also GHSA-jf85-cpcp-j695 , EUVD-2019-0597

cvss: 9.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.0%; EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.

Patch / fix

fixed in 20 distros 2 links 3

npm lodash 4.17.12
npm lodash-es 4.17.14
npm lodash-amd 4.17.13
npm lodash.defaultsdeep 4.6.1
rubygems lodash-rails 4.17.12
lodash lodash 4.17.12
f5 big-ip_access_policy_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_advanced_firewall_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_analytics 15.0.1.3, 15.1.0.2
f5 big-ip_application_acceleration_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_application_security_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_application_visibility_and_reporting 12.1.5.2, 14.1.2.5, 15.1.1
f5 big-ip_domain_name_system 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_edge_gateway 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_fraud_protection_service 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_global_traffic_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_link_controller 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_local_traffic_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_policy_enforcement_manager 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2
f5 big-ip_webaccelerator 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.2

debian red hat

node-lodash Debian 14, Debian 13, Debian 12 4.17.15+dfsg-1

debian advisories DEBIAN-CVE-2019-10744

kiali service mesh 1.0 v1.0.11.redhat1-1.el7
jaeger service mesh 1.0 v1.13.1.redhat7-1.el7
servicemesh-grafana service mesh 1.0 6.2.2-36.el8
servicemesh-grafana-prometheus service mesh 1.0 6.2.2-36.el8
ovirt-web-ui rhev manager 4.3 1.6.0-1.el7ev

red hat advisories RHSA-2020:2362 RHSA-2019:3024

github.com/lodash/lodash#4336 pull request
oracle.com/security-alerts/cpuoct2020.html advisory
oracle.com/security-alerts/cpujan2021.html advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-10744 updated 2026-08-19 cvss 9.1

nodejs-lodash: prototype pollution in defaultsDeep function leading to modifying properties

Red Hat OpenShift Container Platform 3.9 nodejs-lodash Red Hat OpenShift Container Platform 3.10 nodejs-lodash
affected: no fix available “Fix deferred”
Red Hat OpenShift Container Platform 3.11 openshift3/ose-logging-kibana5 Red Hat OpenShift Container Platform 4 logging-kibana5-container Red Hat Quay 3 quay/quay-rhel8
affected: no fix planned “Will not fix”
Red Hat OpenShift Service Mesh 1.0 servicemesh-grafana 6.2.2-36.el8, servicemesh-grafana-prometheus 6.2.2-36.el8
fixed: vendor fix RHSA-2020:2362
Red Hat AMQ 7.10.0
fixed: vendor fix RHSA-2022:5101
Red Hat Fuse 7.10
fixed: vendor fix RHSA-2021:5134
Red Hat OpenShift Jaeger 1.17 distributed-tracing/jaeger-query-rhel7 1.17.2-3, distributed-tracing/jaeger-all-in-one-rhel7 1.17.2-3
fixed: vendor fix RHSA-2020:2819
Red Hat OpenShift Service Mesh 1.0 kiali v1.0.11.redhat1-1.el7, jaeger v1.13.1.redhat7-1.el7
fixed: vendor fix RHSA-2020:2362
Red Hat RHV-M 4.3 ovirt-web-ui 1.6.0-1.el7ev
fixed: vendor fix RHSA-2019:3024

show 1 more

Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8 Red Hat Software Collections rh-nodejs8-npm, rh-nodejs10-npm, rh-nodejs8-nodejs, rh-nodejs10-nodejs
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.01% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

snyk.io https://snyk.io/vuln/SNYK-JS-LODASH-450202 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD	2.0	6.4	AV:N/AC:L/Au:N/C:N/I:P/A:P
GitHub	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	lodash	<4.17.12	4.17.12
npm	lodash-es	<4.17.14	4.17.14
npm	lodash-amd	<4.17.13	4.17.13
npm	lodash.defaultsdeep	<4.6.1	4.6.1
rubygems	lodash-rails	<4.17.12	4.17.12

Affected products

Snyk lodash

Classification

Weakness

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
CWE-20 Improper Input Validation

References

oracle.com /security-alerts/cpuoct2020.html
web, patch, third-party-advisory
oracle.com /security-alerts/cpujan2021.html
web, patch, third-party-advisory
github.com /lodash/lodash/pull/4336
web
snyk.io /vuln/SNYK-JS-LODASH-450202
web, exploit, third-party-advisory
access.redhat.com /errata/RHSA-2019:3024
vendor-advisory, web, third-party-advisory
security.netapp.com /advisory/ntap-20191004-0005/
third-party-advisory
support.f5.com /csp/article/K47105354?utm_source=f5support&amp%3Butm_medium=RSS
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-10744
advisory
github.com /rubysec/ruby-advisory-db/blob/master/gems/lodash-rails/CVE-2019-10744.yml
web
security.netapp.com /advisory/ntap-20191004-0005
web
support.f5.com /csp/article/K47105354?utm_source=f5support&utm_medium=RSS
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary