CVE-2026-48068Network attack vector

Remote server crash via unhandled stream error

Published Jul 14, 2026 · Updated Jul 14, 2026

Uncaught exception handling in @grpc/grpc-js allows remote attackers to crash affected Node.js gRPC servers via malformed HTTP/2 streams. The server attaches an error listener only after dispatch begins, so an invalid stream can emit an unhandled error during initial request processing. No authentication or user interaction is required; successful requests terminate the hosting server process without disclosing or modifying data.

CVSS severity7.5
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught exception handling in @grpc/grpc-js allows remote attackers to crash affected Node.js gRPC servers via malformed HTTP/2 streams. The server attaches an error listener only after dispatch begins, so an invalid stream can emit an unhandled error during initial request processing. No authentication or user interaction is required; successful requests terminate the hosting server process without disclosing or modifying data.

The record

CVE
CVE-2026-48068
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
gRPC
Product
@grpc/grpc-js
Classifications
CWE-248, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.10.0, < 1.10.12
  2. Affected versionversion=>= 1.11.0, < 1.11.4
  3. Affected versionversion=>= 1.12.0, < 1.12.7
  4. Affected versionversion=>= 1.13.0, < 1.13.5
  5. Affected versionversion=>= 1.14.0, < 1.14.4
  6. Affected versionversion=< 1.9.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

gRPC · @grpc/grpc-jsversion=>= 1.10.0, < 1.10.12; version=>= 1.11.0, < 1.11.4; version=>= 1.12.0, < 1.12.7; version=>= 1.13.0, < 1.13.5; version=>= 1.14.0, < 1.14.4; version=< 1.9.16

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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