What’s Vulnerable › Vulnerabilities

CVE-2021-28860

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-03 · updated 2026-07-09
• Weakness: CWE-1321

Description

In Node.js mixme, prior to v0.5.1, an attacker can add or alter properties of an object via '__proto__' through the mutate() and merge() functions. The polluted attribute will be directly assigned to every object in the program. This will put the availability of the program at risk causing a potential denial of service (DoS).

Affected products

• adaltas Mixme: before 0.5.1 — fixed in 0.5.1

How to fix

Upgrade to a fixed version: adaltas Mixme 0.5.1. Check the vendor advisory for mitigations.

References

• https://github.com/adaltas/node-mixme/commit/cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028
• https://github.com/adaltas/node-mixme/issues/1
• https://github.com/adaltas/node-mixme/security/advisories/GHSA-79jw-6wg7-r9g4
• https://security.netapp.com/advisory/ntap-20210618-0005/
• https://www.npmjs.com/~david
• https://github.com/adaltas/node-mixme/commit/cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028
• https://github.com/adaltas/node-mixme/issues/1
• https://github.com/adaltas/node-mixme/security/advisories/GHSA-79jw-6wg7-r9g4
• https://security.netapp.com/advisory/ntap-20210618-0005/
• https://www.npmjs.com/~david

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