Skip to content
Fencer Vulns
high 7.5

CVE-2020-8237 json

Uncontrolled Resource Consumption in json-bigint

published 2020-09-18 6 y ago modified 2026-06-17 4 mo ago also GHSA-wgfq-7857-4jcc , EUVD-2021-1219

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Prototype pollution in json-bigint npm package < 1.0.0 may lead to a denial-of-service (DoS) attack.

Patch / fix

  • npm json-bigint 1.0.0
  • json-bigint_project json-bigint 1.0.0

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-2020-8237 updated cvss 7.5

nodejs-json-bigint: Prototype pollution via `__proto__` assignment could result in DoS

  • Red Hat OpenShift Container Storage 4.6 on RHEL-8 ocs4/mcg-core-rhel8 5.6.0-38.31e0c3c7b.5.6
    fixed: vendor fix RHSA-2020:5605
  • Red Hat OpenShift Container Storage 4.6 on RHEL-8 ocs4/ocs-operator-bundle 4.6.0-7, ocs4/mcg-rhel8-operator 5.6.0-39.2279a46.5.6, ocs4/cephcsi-rhel8 4.6-52.49cf5efdd.release_4.6, ocs4/ocs-rhel8-operator 4.6-76.0811c33c.release_4.6, ocs4/ocs-must-gather-rhel8 4.6-76.0811c33c.release_4.6, ocs4/rook-ceph-rhel8-operator 4.6-80.1ae5ac6a.release_4.6
    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

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/916430 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm json-bigint
<1.0.0
1.0.0

Affected products

  • n/a json-bigint

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

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.