How severe is CVE-2020-35380?

CVE-2020-35380 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-35380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35380?

CVE-2020-35380 affects Gjson Project Gjson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35380?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-35380 published?

CVE-2020-35380 was published on 2020-12-15 and last updated on 2026-06-17.

CVE-2020-35380

CVE-2020-35380 is a high-severity vulnerability in Gjson Project Gjson with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gjson Project Gjson
Published: 2020-12-15
Last modified: 2026-06-17

Description

GJSON before 1.6.4 allows attackers to cause a denial of service via crafted JSON.

Frequently asked questions

What is CVE-2020-35380?: GJSON before 1.6.4 allows attackers to cause a denial of service via crafted JSON.
How severe is CVE-2020-35380?: CVE-2020-35380 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-35380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35380?: CVE-2020-35380 affects Gjson Project Gjson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35380?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-35380 published?: CVE-2020-35380 was published on 2020-12-15 and last updated on 2026-06-17.

References

https://github.com/tidwall/gjson/issues/192

Affected products (1)

cpe:2.3:a:gjson_project:gjson:*:*:*:*:*:*:*:*

More vulnerabilities in Gjson Project Gjson

CVE-2021-42836 — High (CVSS 7.5): GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.
CVE-2020-36067 — High (CVSS 7.5): GJSON <=v1.6.5 allows attackers to cause a denial of service (panic: runtime error: slice bounds out of range) via a…
CVE-2020-36066 — High (CVSS 7.5): GJSON <1.6.5 allows attackers to cause a denial of service (remote) via crafted JSON.

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