How severe is CVE-2020-7644?

CVE-2020-7644 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-7644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7644?

CVE-2020-7644 affects Fun-map Project Fun-map. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7644?

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-2020-7644 published?

CVE-2020-7644 was published on 2020-04-28 and last updated on 2026-06-17.

CVE-2020-7644

CVE-2020-7644 is a high-severity vulnerability in Fun-map Project Fun-map with a CVSS 3.x base score of 8.1. 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-1321.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Fun-map Project Fun-map
Published: 2020-04-28
Last modified: 2026-06-17

Description

fun-map through 3.3.1 is vulnerable to Prototype Pollution. The function assocInM could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.

Frequently asked questions

What is CVE-2020-7644?: fun-map through 3.3.1 is vulnerable to Prototype Pollution. The function assocInM could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.
How severe is CVE-2020-7644?: CVE-2020-7644 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-7644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7644?: CVE-2020-7644 affects Fun-map Project Fun-map. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7644?: 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-2020-7644 published?: CVE-2020-7644 was published on 2020-04-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fun-map_project:fun-map:*:*:*:*:*:*:*:*

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