CVE-2020-7766

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.3 under NVD CVSS v3. EPSS exploit probability: 1.9%, top 23% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

This affects all versions of package json-ptr. The issue occurs in the set operation (https://flitbit.github.io/json-ptr/classes/_src_pointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.

CVSS v3
7.3
EG Score
7.3(medium)
EPSS
77.2%
KEV
Not listed

Published

November 10, 2020

Last Modified

November 21, 2024

References (6)

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
json-ptr—2.1.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 22:41 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
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  1. 2026-07-06 02:21 UTCEPSS rescore
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  72. 2026-05-23 05:30 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-7766?
CVE-2020-7766 is a high vulnerability published on November 10, 2020. This affects all versions of package json-ptr. The issue occurs in the set operation (https://flitbit.github.io/json-ptr/classes/srcpointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check…
When was CVE-2020-7766 disclosed?
CVE-2020-7766 was first published in the National Vulnerability Database on November 10, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-7766 actively exploited?
CVE-2020-7766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-7766?
CVE-2020-7766 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2020-7766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-7766, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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