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Vulnerability record · CVE-2020-7768 · published 11 November 2020

CVE-2020-7768: Grpc prototype pollution vulnerability

Grpc · Grpc

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

9.8 CVSS 3.1 Critical EPSS 4.2% · top 9.4% CWE-1321 · Prototype pollution
9.8CVSS 3.1 base score, v2 5.0
4.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed9.8CVE-2017-9431Grpc out-of-bounds write vulnerabilityGoogle gRPC before 2017-04-05 has an out-of-bounds write caused by a heap-based buffer overflow related to core/lib/iomgr/error.c.EPSS 2.4%9.8CVE-2017-8359Grpc out-of-bounds write vulnerabilityGoogle gRPC before 2017-03-29 has an out-of-bounds write caused by a heap-based use-after-free related to the grpc_call_destroy function in core/lib/…EPSS 3.1%9.8CVE-2017-7860Grpc out-of-bounds write vulnerabilityGoogle gRPC before 2017-02-22 has an out-of-bounds write caused by a heap-based buffer overflow related to the parse_unix function in core/ext/client…EPSS 3.1%9.8CVE-2017-7861Grpc out-of-bounds write vulnerabilityGoogle gRPC before 2017-02-22 has an out-of-bounds write related to the gpr_free function in core/lib/support/alloc.c.EPSS 2.9%9.1CVE-2026-33186Grpc improper authorization vulnerabilitygRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of …EPSS 1.6%7.5CVE-2023-4785Grpc vulnerabilityLack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause…EPSS 0.77%7.5CVE-2023-33953Grpc allocation without limits vulnerabilitygRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional…EPSS 0.48%

Source: NIST National Vulnerability Database (record CVE-2020-7768), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.