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Fencer Intel
medium 6.0

CVE-2020-7709 json

Prototype Pollution

published 6y ago modified 4mo ago also GHSA-7mg4-w3w5-x5pc , EUVD-2021-1001

cvss
6.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

This affects the package json-pointer before 0.6.1. Multiple reference of object using slash is supported.

Patch / fix

  • npm json-pointer 0.6.1
  • maven org.webjars.npm:json-pointer 0.6.1
  • n/a json-pointer 0.6.1

Is CVE-2020-7709 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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Exploit prediction

1.78% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • snyk.io https://snyk.io/vuln/SNYK-JS-JSONPOINTER-596925 referenced PoC, tagged "exploit" by a source, unverified
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-598862 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.0 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 6.0 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H

Affected packages

ecosystem package affected fixed in
npm json-pointer
<0.6.1
0.6.1
maven org.webjars.npm:json-pointer
<0.6.1
0.6.1

Affected products

  • n/a json-pointer

Classification

Weakness
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes

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.