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No exploitation reportedFix available

CVE-2018-3750

No exploitation reported by the sources we read.

  • Published2018-07-03
  • Fixed in0.5.1
  • WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.

Timeline

dates in UTC
  1. 2018-07-0321:29CVE publishedNVD

Versions per branch

OSV · NVD
deep-extend
BranchAffectedFixed in
0.5< 0.5.10.5.1
Deep extend project deep extend
BranchAffectedFixed in
0.5≤ 0.5.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • deep-extendTuxCare:npmfrom 0.4.2-tuxcare.0 · fixed in 0.4.2-tuxcare.1
  • node-deep-extendUbuntu:18.04:LTSall versions · no fixed version listed
  • node-deep-extendDebian:14all versions · fixed in 0.4.1-2
  • node-deep-extendDebian:13all versions · fixed in 0.4.1-2
  • node-deep-extendDebian:12all versions · fixed in 0.4.1-2
  • nodejsRed Hat:enterprise_linux:8::appstreamall versions · fixed in 1:12.20.1-1.module+el8.3.0+9503+19cb079cand 5 other packages
  • nodejs-nodemonRocky Linux:8all versions · fixed in 0:2.0.3-1.module+el8.3.0+100+234774f7
  • nodejs-nodemonRocky Linux:8all versions · fixed in 0:2.0.3-1.module+el8.4.0+638+5344c6f7

14 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-3750 Red Hat Product Security138 products fixed · 5 known affected

    nodejs-deep-extend: Prototype pollution can allow attackers to modify object properties

    nodejs-nodemon.src (nodejs:10) as a component of Red Hat Enterprise Linux 8 · nodejs-nodemon (nodejs:10) as a component of Red Hat Enterprise Linux 8 · rh-nodejs10-nodejs-nodemon.src as a component of Red Hat Software Collections · +2 more

  • RHSA-2021:0549 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: nodejs:12 security update

  • RHSA-2021:0485 Red Hat Product Security56 products fixed

    Red Hat Security Advisory: rh-nodejs12-nodejs security update

  • RHSA-2020:2625 Red Hat Product Security52 products fixed

    Red Hat Security Advisory: rh-nodejs8-nodejs security update

Full record on NVD

Fix

  1. Update deep-extend to 0.5.1
  2. Vendor fix Red Hat Product Security RHSA-2021:0549 · 30 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. No fix available, says the vendor Red Hat Product Security CVE-2018-3750 · 3 productsFix deferred
  4. No fix planned, says the vendor Red Hat Product Security CVE-2018-3750 · 2 productsWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.09.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-20read 2026-10-23
  • FIRST EPSSEPSS score2.1 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryCRITICAL2020-06-16

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-07-03
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-hr2v-3952-633q

Frequently asked questions

What is CVE-2018-3750?

The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.

Is CVE-2018-3750 actively exploited?

Active exploitation of CVE-2018-3750 has not been confirmed. Its EPSS score was 2.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-3750?

CVE-2018-3750 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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