fix: fix security issue in env_handler_auth.go - #92
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The OAuth2 implementation uses standard authorization code flow without PKCE (Proof Key for Code Exchange) protection
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Summary
Fix high severity security issue in
web/env_handler_auth.go.Vulnerability
V-001web/env_handler_auth.go:31Description: The OAuth2 implementation uses standard authorization code flow without PKCE (Proof Key for Code Exchange) protection. The authorization code is exchanged for tokens without verifying that the code was issued to the same client instance, making the application vulnerable to authorization code interception attacks.
Evidence
Exploitation scenario: An attacker with network positioning (e.g., shared WiFi, compromised router) or a malicious application on the same device can intercept the OAuth authorization code from the redirect URL.
Scanner confirmation: multi_agent_ai rule
V-001flagged this pattern.Production code: This file is in the production codebase, not test-only code.
Threat Model Context
This is a Go service - vulnerabilities in HTTP handlers are remotely exploitable.
Changes
web/env_handler_auth.goBehavior Preservation
The change is scoped to 1 file on the vulnerable path.
Automated security fix by OrbisAI Security