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Fencer Intel
high 7.3

CVE-2020-8116 json

dot-prop Prototype Pollution vulnerability

published 6y ago modified last mo. also GHSA-ff7x-qrg7-qggm , EUVD-2020-0554

cvss
7.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Prototype pollution vulnerability in dot-prop npm package versions before 4.2.1 and versions 5.x before 5.1.1 allows an attacker to add arbitrary properties to JavaScript language constructs such as objects.

Patch / fix

  • npm dot-prop 4.2.1, 5.1.1
  • dot-prop_project dot-prop 4.2.1, 5.1.1
  • node-dot-prop Debian 14, Debian 13, Debian 12 5.2.0-1

debian advisories DEBIAN-CVE-2020-8116

  • npm RHEL 8 1:6.14.10-1.10.23.1.1.module+el8.3.0+9502+012d8a97
  • nodejs RHEL 8 1:10.23.1-1.module+el8.3.0+9502+012d8a97
  • nodejs-nodemon RHEL 8 1.18.3-1.module+el8+2632+6c5111ed
  • nodejs-full-i18n RHEL 8 1:10.23.1-1.module+el8.3.0+9502+012d8a97
  • nodejs-packaging RHEL 8 17-3.module+el8+2873+aa7dfd9a
  • rh-nodejs10-nodejs RHEL 3 SOFTWARE_COLLECTIONS 10.23.1-2.el7
  • rh-nodejs10-npm RHEL 3 SOFTWARE_COLLECTIONS 6.14.10-10.23.1.2.el7
  • rh-nodejs12-nodejs RHEL 3 SOFTWARE_COLLECTIONS 12.18.4-3.el7

red hat advisories RHSA-2021:0548RHSA-2021:0521RHSA-2020:5086RHSA-2020:4272RHSA-2020:4903

  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2023+d2377ea3
  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2224+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.3.0+2023+d2377ea3

almalinux advisories ALSA-2021:0548ALSA-2020:4272

  • nodejs-nodemon Rocky Linux 8 1.18.3-1.module+el8.3.0+101+f84c7154
  • nodejs-packaging Rocky Linux 8 17-3.module+el8.3.0+101+f84c7154

rocky linux advisories RLSA-2021:0548RLSA-2020:4272

Is CVE-2020-8116 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2020-8116 updated cvss 7.3

nodejs-dot-prop: prototype pollution

  • Red Hat OpenShift Service Mesh 1 servicemesh-grafana, servicemesh-grafana-prometheus Red Hat OpenShift Container Platform 4 openshift4/ose-grafana
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 10.23.1-1.module+el8.3.0+9502+012d8a97, nodejs 12.18.4-2.module+el8.2.0+8361+192e434e, nodejs-packaging 17-3.module+el8+2873+aa7dfd9a, nodejs-nodemon 1.18.3-1.module+el8+2632+6c5111ed, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, npm 6.14.6-1.12.18.4.2.module+el8.2.0+8361+192e434e, +4 more
    fixed: vendor fix RHSA-2020:4272
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) nodejs 12.18.4-2.module+el8.1.0+8360+14141500, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, npm 6.14.6-1.12.18.4.2.module+el8.1.0+8360+14141500, nodejs-nodemon 1.18.3-1.module+el8.1.0+3369+37ae6a45, nodejs-full-i18n 12.18.4-2.module+el8.1.0+8360+14141500
    fixed: vendor fix RHSA-2020:4903
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs10-nodejs 10.23.1-2.el7, rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7, rh-nodejs10-npm 6.14.10-10.23.1.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs10-nodejs 10.23.1-2.el7, rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7, rh-nodejs10-npm 6.14.10-10.23.1.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs10-nodejs 10.23.1-2.el7, rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7, rh-nodejs10-npm 6.14.10-10.23.1.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs10-nodejs 10.23.1-2.el7, rh-nodejs12-nodejs 12.18.4-3.el7, rh-nodejs12-npm 6.14.6-12.18.4.3.el7, rh-nodejs10-npm 6.14.10-10.23.1.2.el7
    fixed: vendor fix RHSA-2020:5086
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat OpenShift Container Platform 4 openshift4/ose-prometheus-rhel9 Red Hat Openshift Container Storage 4 ocs4/mcg-core-rhel8 Red Hat Software Collections rh-nodejs14-npm, rh-nodejs14-nodejs, rh-nodejs14-nodejs-full-i18n
    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

3.08% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/719856 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
npm dot-prop
<4.2.1
>=5.0.0, <5.1.1
4.2.1
5.1.1

Affected products

  • n/a dot-prop

Classification

Weakness
  • CWE-471 Modification of Assumed-Immutable Data (MAID)
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
  • CWE-425 Direct Request

References

Sources

Fencer Intel 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.