Is CVE-2020-7770 in the CISA KEV catalog?

No. CVE-2020-7770 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-7770?

CVE-2020-7770 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-7770?

CVE-2020-7770 has an EPSS score of 1.87% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-7770?

Upgrade json8 to 1.0.3 or later.

CVE & CISA-KEV Catalog

CVE-2020-7770

MEDIUMEPSS 77th pctl

6.5

CVSS v3

NVD

Description

This affects the package json8 before 1.0.3. The function adds in the target object the property specified in the path, however it does not properly check the key being set, leading to a prototype pollution.

CWE-1321

How to fix

Remediation Available

json8NVD

Affected:< 1.0.3Fixed in:1.0.3CVE-2020-7770derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

1.87%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch1

github.com

Exploit1

snyk.io

Related Vulnerabilities

Other CWE-1321 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0230	Critical	9.8	97%	-	-
CVE-2019-11358	Medium	6.1	87%	-	Fix
CVE-2020-7774	High	7.3	69%	-	Fix
CVE-2022-24760	Critical	10.0	49%	-	Fix
CVE-2022-39396	Critical	9.8	39%	-	Fix
CVE-2022-2564	Critical	9.8	33%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.