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Fencer Intel
high 7.5

CVE-2020-36066 json

github.com/tidwall/gjson is vulnerable to Denial of service

published 5y ago modified 4mo ago also GHSA-wjm3-fq3r-5x46 , GO-2022-0957 , EUVD-2021-1221

cvss
7.5
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 79%
public exploits
0
none known

Summary

GJSON <1.6.5 allows attackers to cause a denial of service (remote) via crafted JSON.

Patch / fix

  • go github.com/tidwall/gjson 1.6.5
  • gjson_project gjson 1.6.5
  • golang-github-tidwall-gjson Debian 14, Debian 13, Debian 12 1.6.7-1

debian advisories DEBIAN-CVE-2020-36066

Is CVE-2020-36066 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

1.84% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/tidwall/gjson/issues/195 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
go github.com/tidwall/gjson
<1.6.5
1.6.5

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.