What’s Vulnerable › Vulnerabilities

CVE-2020-35149

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-11 · updated 2026-06-17

Description

lib/utils.js in mquery before 3.2.3 allows a pollution attack because a special property (e.g., __proto__) can be copied during a merge or clone operation.

Affected products

• Mquery Project Mquery: before 3.2.3 — fixed in 3.2.3

How to fix

Upgrade to a fixed version: Mquery Project Mquery 3.2.3. Check the vendor advisory for mitigations.

References

• https://github.com/aheckmann/mquery/commit/792e69fd0a7281a0300be5cade5a6d7c1d468ad4
• https://github.com/aheckmann/mquery/commit/792e69fd0a7281a0300be5cade5a6d7c1d468ad4

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