What’s Vulnerable › Vulnerabilities

CVE-2020-7768: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-11 · updated 2026-06-17
• Weakness: CWE-1321

Description

The package grpc before 1.24.4; the package @grpc/grpc-js before 1.1.8 are vulnerable to Prototype Pollution via loadPackageDefinition.

Affected products

• Google gRPC: before 1.1.8; before 1.24.2 — fixed in 1.1.8, 1.24.2

How to fix

Upgrade to a fixed version: Google gRPC 1.1.8, 1.24.2. Check the vendor advisory for mitigations.

References

• https://github.com/grpc/grpc-node/pull/1605
• https://github.com/grpc/grpc-node/pull/1606
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038819
• https://snyk.io/vuln/SNYK-JS-GRPC-598671
• https://snyk.io/vuln/SNYK-JS-GRPCGRPCJS-1038818
• https://github.com/grpc/grpc-node/pull/1605
• https://github.com/grpc/grpc-node/pull/1606
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038819
• https://snyk.io/vuln/SNYK-JS-GRPC-598671
• https://snyk.io/vuln/SNYK-JS-GRPCGRPCJS-1038818

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