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Fencer Intel
critical 9.8

CVE-2019-10746 json

Prototype Pollution in mixin-deep

published 7y ago modified last mo. also GHSA-fhjf-83wg-r2j9 , EUVD-2019-0632

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

mixin-deep is vulnerable to Prototype Pollution in versions before 1.3.2 and version 2.0.0. The function mixin-deep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.

Patch / fix

  • npm mixin-deep 1.3.2, 2.0.1
  • mixin-deep_project mixin-deep 1.3.2
  • node-mixin-deep Debian 14, Debian 13, Debian 12 2.0.1-1

debian advisories DEBIAN-CVE-2019-10746

  • rh-nodejs12-nodejs RHEL 3 SOFTWARE_COLLECTIONS 12.20.1-1.el7
  • rh-nodejs12-npm RHEL 3 SOFTWARE_COLLECTIONS 6.14.10-12.20.1.1.el7
  • rh-nodejs12-nodejs-nodemon RHEL 3 SOFTWARE_COLLECTIONS 2.0.3-1.el7
  • npm RHEL 8 1:6.14.10-1.12.20.1.1.module+el8.3.0+9503+19cb079c
  • nodejs RHEL 8 1:12.20.1-1.module+el8.3.0+9503+19cb079c
  • nodejs-nodemon RHEL 8 2.0.3-1.module+el8.3.0+9715+1718613f
  • nodejs-full-i18n RHEL 8 1:12.20.1-1.module+el8.3.0+9503+19cb079c
  • nodejs-packaging RHEL 8 17-3.module+el8.1.0+3369+37ae6a45

red hat advisories RHSA-2021:0485RHSA-2021:0549

  • nodejs-nodemon AlmaLinux 8 2.0.3-1.module_el8.4.0+2521+c668cc9f
  • 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-2021:0549

  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.6.0+982+9fdca2d4
  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.3.0+100+234774f7
  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.4.0+638+5344c6f7
  • nodejs-packaging Rocky Linux 8 17-3.module+el8.3.0+101+f84c7154

rocky linux advisories RLSA-2021:0549

Is CVE-2019-10746 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-2019-10746 updated cvss 7.0

nodejs-mixin-deep: prototype pollution in function mixin-deep

  • Red Hat Enterprise Linux 8 nodejs-nodemon Red Hat OpenShift Container Platform 3.11 kibana Red Hat OpenShift Container Platform 4 kibana Red Hat Software Collections rh-nodejs10-nodejs-nodemon
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 12.20.1-1.module+el8.3.0+9503+19cb079c, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, nodejs-nodemon 2.0.3-1.module+el8.3.0+9715+1718613f, npm 6.14.10-1.12.20.1.1.module+el8.3.0+9503+19cb079c, nodejs-full-i18n 12.20.1-1.module+el8.3.0+9503+19cb079c
    fixed: vendor fix RHSA-2021:0549
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs12-nodejs 12.20.1-1.el7, rh-nodejs12-npm 6.14.10-12.20.1.1.el7, rh-nodejs12-nodejs-nodemon 2.0.3-1.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs12-nodejs 12.20.1-1.el7, rh-nodejs12-npm 6.14.10-12.20.1.1.el7, rh-nodejs12-nodejs-nodemon 2.0.3-1.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs12-nodejs 12.20.1-1.el7, rh-nodejs12-npm 6.14.10-12.20.1.1.el7, rh-nodejs12-nodejs-nodemon 2.0.3-1.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs12-nodejs 12.20.1-1.el7, rh-nodejs12-npm 6.14.10-12.20.1.1.el7, rh-nodejs12-nodejs-nodemon 2.0.3-1.el7
    fixed: vendor fix RHSA-2021:0485
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8 Red Hat Enterprise Linux 8 nodejs-nodemon Red Hat Quay 3 quay Red Hat Software Collections rh-nodejs14-nodejs-nodemon
    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

3.65% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • snyk.io https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm mixin-deep
<1.3.2
>=2.0.0, <2.0.1
1.3.2
2.0.1

Affected products

  • n/a mixin-deep

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command

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.