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

Source: https://junglewise.ai/threats/cve-2026-101915-grpc-grpc-js-implements-the-core-functionality-of-grpc-purely-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-101915 · Severity: low · CVSS 3.7 · Published 2026-09-28

@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.

Technologies: [@grpc/grpc-js (npm)](https://junglewise.ai/threats/technologies/grpc-grpc-js). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-101915 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101915 being exploited in the wild.

**How severe is CVE-2026-101915?** Low severity, with a CVSS score of 3.7, published 28 September 2026.

**Which products and versions are affected?** @grpc/grpc-js (npm) SEMVER:introduced=0,fixed=1.13.6.

**Is there a fix for CVE-2026-101915?** Yes. @grpc/grpc-js (npm): upgrade to 1.13.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-101915?** Check whether you run @grpc/grpc-js (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- @grpc/grpc-js (npm): upgrade to 1.13.6 or later

  ```sh
  npm install @grpc/grpc-js@1.13.6
  ```


## Affected products

- @grpc/grpc-js (npm) SEMVER:introduced=0,fixed=1.13.6

## Identifiers

- CVE-2026-101915
- GHSA-f596-whhp-79r4

## Related threats

- [@grpc/grpc-js authentication context validation bypass](https://junglewise.ai/threats/cve-2026-101916-grpc-grpc-js-implements-the-core-functionality-of-grpc-purely-in)
- [gRPC @grpc/grpc-js denial of service via malformed compressed message](https://junglewise.ai/threats/cve-2026-48069-grpc-grpc-grpc-js-denial-of-service-via-malformed-compressed)
- [gRPC grpc-js denial of service via invalid HTTP/2 stream](https://junglewise.ai/threats/cve-2026-48068-grpc-grpc-js-denial-of-service-via-invalid-http-2-stream)
- [gRPC grpc-js unbounded memory allocation on incoming messages](https://junglewise.ai/threats/cve-2024-37168-grpc-grpc-js-unbounded-memory-allocation-on-incoming-messages)
- [gRPC prototype pollution in loadPackageDefinition](https://junglewise.ai/threats/cve-2020-7768-grpc-prototype-pollution-in-loadpackagedefinition)