🛡️ CVE-2020-7644 — fun-map

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-1321 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Uncontrolled Resource Consumption in fun-map

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 this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2020-7644 is classified as CWE-1321: Prototype Pollution. Attacker input can modify an object prototype, changing behaviour for objects across the application.

Affected software

CVE-2020-7644 is recorded against 1 package.

  • fun-map

Timeline and source

Published on 10 December 2021 and last revised on 13 March 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
snyk.io (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-1321
Public Exploit ✅ No
Source OSV
Published 2021-12-10
Updated 2026-08-12
Modified 2026-03-13
Fix URL N/A

Affected Packages

Software From version Fixed in
fun-map — —

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