Skip to content
Fencer Intel
medium 5.3

CVE-2020-35149 json

Code Injection in mquery

published 5y ago modified 4mo ago also GHSA-45q2-34rf-mr94 , EUVD-2020-1478

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

lib/utils.js in mquery before 3.2.3 allows a pollution attack because a special property (e.g., __proto__) can be copied during a merge or clone operation.

Patch / fix

  • npm mquery 3.2.3
  • mquery_project mquery 3.2.3

Is CVE-2020-35149 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.

Check with Fencer

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-2020-35149 updated cvss 4.3

mquery: Code injection via merge or clone operation

  • Red Hat Advanced Cluster Management for Kubernetes 2.1 for RHEL 8 rhacm2/acm-must-gather-rhel8 v2.1.6-6
    fixed: vendor fix RHSA-2021:1369

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

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm mquery
<3.2.3
3.2.3

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

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.