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High, CVSS 7.5amended

Prototype pollution in grpc and @grpc/grpc-js

CVE-2020-7768GHSA-pp75-xfpw-37g9

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (grpc 1.24.4; @grpc/grpc-js 1.1.8), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
  • CVE-2020-7768: 4.03% estimated exploitation activity in the next 30 days; percentile 90.60 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-pp75-xfpw-37g9

  2. Revision 1 · created ·

    Published from osv record GHSA-pp75-xfpw-37g9

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2020-7768

Advisory: Prototype pollution in grpc and @grpc/grpc-js
IDs: CVE-2020-7768, GHSA-pp75-xfpw-37g9
Record: https://patchnext.com/advisories/cve-2020-7768 (revision 2, source checked 26 Oct 2026, 12:16 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: grpc 1.24.4; @grpc/grpc-js 1.1.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm grpc: affected < 1.24.4; fixed in 1.24.4
- npm @grpc/grpc-js: affected < 1.1.8; fixed in 1.1.8

## Suggested inspection (read-only)
- `npm ls grpc --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- `npm ls @grpc/grpc-js --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on grpc, @grpc/grpc-js.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-pp75-xfpw-37g9 (OSV record GHSA-pp75-xfpw-37g9 lists affected ranges: npm grpc >=0 =0 <1.1.8 (fixed))
- Verified: https://github.com/advisories/GHSA-pp75-xfpw-37g9 (GitHub-reviewed advisory GHSA-pp75-xfpw-37g9 lists affected ranges: npm grpc >=0 =0 <1.1.8)

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