Is this vulnerability remotely exploitable from the internet?

Not directly in the traditional sense. The server listens locally, but any website visited by the user can issue cross-origin requests due to permissive CORS, effectively turning normal browsing into a potential remote trigger for local command execution.

What level of access does an attacker need to exploit this?

An attacker needs either the ability to run code on the victim's machine (even as a low-privilege local process) or to lure the user into visiting a malicious or compromised website that can send HTTP requests to the local OpenCode server.

What is the safest general fix pattern?

The most robust pattern is to require strong authentication and authorization for any endpoints that can execute commands or alter the local environment, minimize the exposed API surface, and avoid direct shell execution where a safer, higher-level abstraction can be used.

Severity:

HIGH RISK

(8.8)

Unauthenticated Local HTTP Command Execution (CWE-306) in OpenCode AI Coding Agent

CVE-2026-22812

Published:

Jan 12, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Missing Authentication for Critical Functionality

CWE:

CWE-306;CWE-749;CWE-942

Impact:

Arbitrary Command Execution with User Privileges

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication for Critical Functionality

CWE:

CWE-306;CWE-749;CWE-942

Impact:

Arbitrary Command Execution with User Privileges

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Unauthenticated Local HTTP Command Execution (CWE-306) in OpenCode AI Coding Agent

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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