CVE-2026-76760Public exploitNetwork attack vectorHinoki check available

Unauthenticated command execution via empty webhook token

Published Aug 19, 2026 · Updated Aug 20, 2026

OS command injection in cc-connect 1.4.0 and 1.4.1 allows remote attackers to execute shell commands via crafted webhook exec requests. In core/webhook.go, Authenticate accepts requests when webhook.token is empty, and the /hook handler accepts an exec field that is sent to shell execution without neutralizing command input. Reachability depends on the webhook endpoint being enabled and exposed with an empty token, a mode the project documents as disabling authentication, and successful exploitation executes in the cc-connect process context.

CVSS severity7.3
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in cc-connect 1.4.0 and 1.4.1 allows remote attackers to execute shell commands via crafted webhook exec requests. In core/webhook.go, Authenticate accepts requests when webhook.token is empty, and the /hook handler accepts an exec field that is sent to shell execution without neutralizing command input. Reachability depends on the webhook endpoint being enabled and exposed with an empty token, a mode the project documents as disabling authentication, and successful exploitation executes in the cc-connect process context.

The record

CVE
CVE-2026-76760
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
chenhg5
Product
cc-connect
Classifications
CWE-94, CWE-74, T1059, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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=1.4.0
  2. Affected versionversion=1.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

chenhg5 · cc-connectversion=1.4.0; version=1.4.1

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter
T1190Exploit Public-Facing Application

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