CVE-2026-19268Public exploitNetwork attack vector

Authenticated command execution via date parameter injection

Published Aug 8, 2026 · Updated Aug 8, 2026

Command injection in MCP Gateway allows remote authenticated users to execute host commands through the Claude usage range endpoint. getUsageByDateRange appends caller-controlled since and until values to an npx ccusage shell string and passes the result to execAsync without date validation or argument separation. Reachability requires the optional Claude Usage feature to be enabled; injected commands run with the gateway process account on the host.

CVSS severity6.3
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Command injection in MCP Gateway allows remote authenticated users to execute host commands through the Claude usage range endpoint. getUsageByDateRange appends caller-controlled since and until values to an npx ccusage shell string and passes the result to execAsync without date validation or argument separation. Reachability requires the optional Claude Usage feature to be enabled; injected commands run with the gateway process account on the host.

The record

CVE
CVE-2026-19268
Published
Aug 8, 2026
Updated
Aug 8, 2026
Vendor
Abdullah Sarfaraz
Product
MCP Gateway
Classifications
CWE-77, CWE-74, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 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=549f494a9e363f40530149de324b8097de424230

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Abdullah Sarfaraz · MCP Gatewayversion=549f494a9e363f40530149de324b8097de424230

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo