How severe is CVE-2020-36067?

CVE-2020-36067 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-2020-36067 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36067?

CVE-2020-36067 affects Gjson Project Gjson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36067?

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-2020-36067 published?

CVE-2020-36067 was published on 2021-01-05 and last updated on 2026-06-17.

CVE-2020-36067

Q: What is CVE-2020-36067?

GJSON <=v1.6.5 allows attackers to cause a denial of service (panic: runtime error: slice bounds out of range) via a crafted GET call.

CVE-2020-36067 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. The underlying weakness is classified as CWE-129.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Gjson Project Gjson
Published: 2021-01-05
Last modified: 2026-06-17

Description

GJSON <=v1.6.5 allows attackers to cause a denial of service (panic: runtime error: slice bounds out of range) via a crafted GET call.

Frequently asked questions

What is CVE-2020-36067?: GJSON <=v1.6.5 allows attackers to cause a denial of service (panic: runtime error: slice bounds out of range) via a crafted GET call.
How severe is CVE-2020-36067?: CVE-2020-36067 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-2020-36067 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36067?: CVE-2020-36067 affects Gjson Project Gjson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36067?: 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-2020-36067 published?: CVE-2020-36067 was published on 2021-01-05 and last updated on 2026-06-17.

References

https://github.com/tidwall/gjson/issues/196

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-2020-36066 — High (CVSS 7.5): GJSON <1.6.5 allows attackers to cause a denial of service (remote) via crafted JSON.
CVE-2020-35380 — High (CVSS 7.5): GJSON before 1.6.4 allows attackers to cause a denial of service via crafted JSON.

All CVEs affecting Gjson Project Gjson →

Other CWE-129 (Improper Validation of Array Index) vulnerabilities

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CVE-2020-27483 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
CVE-2026-21413 — Critical (CVSS 9.8): A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545…
CVE-2025-27034 — Critical (CVSS 9.8): Memory corruption while selecting the PLMN from SOR failed list.
CVE-2025-3357 — Critical (CVSS 9.8): IBM Tivoli Monitoring 6.3.0.7 through 6.3.0.7 Service Pack 19 could allow a remote attacker to execute arbitrary code…
CVE-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.

Browse all CWE-129 (Improper Validation of Array Index) vulnerabilities →