Skip to content

OAuth2 - Unable to Access All Applications (403 Forbidden) #13432

Open
@ramkumar261101

Description

@ramkumar261101

Description:
I recently created an OAuth2 application to integrate multiple applications using a single provider. While I can log in and view the currently logged-in user's information, I encounter a 403 Forbidden error when trying to access all applications.

What I Have Implemented:

Successfully authenticated and retrieved the logged-in user's info.
Attempting to retrieve a list of all applications results in a 403 Forbidden error.
Possible Causes Investigated:

Verified OAuth2 scopes and permissions.
Checked token roles and claims.
Ensured the API has the correct authorization settings.
Code Snippets: (Include relevant parts of your code for authentication, token handling, and API calls)

Expected Behavior:

Users with the correct roles/permissions should be able to retrieve all applications without a 403 Forbidden error.
Questions:

What could be causing this authorization issue?
How can I ensure that my OAuth2 tokens have the required permissions for accessing all applications?

def get_auth_code():
auth_url = f"{AUTHORIZE_URL}?client_id={CLIENT_ID}&response_type=code&scope=openid email profile applications&redirect_uri={REDIRECT_URI}"
print(f"\n🔗 Open this URL in your browser: {auth_url}")
webbrowser.open(auth_url) # Opens in default browser
auth_code = input("\n📥 Enter the authorization code from the URL: ")
return auth_code

Step 2: Exchange Authorization Code for Access Token

def get_access_token(auth_code):
payload = {
"grant_type": "authorization_code",
"client_id": CLIENT_ID,
"client_secret": CLIENT_SECRET,
"code": auth_code,
"redirect_uri": REDIRECT_URI
}

response = requests.post(TOKEN_URL, data=payload)
if response.status_code == 200:
    token_data = response.json()
    print("\n✅ Token Response:", json.dumps(token_data, indent=2))
    return token_data
else:
    print(f"\n❌ Failed to get token (Status: {response.status_code}): {response.text}")
    return None

Step 3: Fetch User Info

def fetch_user_info(access_token):
headers = {"Authorization": f"Bearer {access_token}"}
response = requests.get(USERINFO_URL, headers=headers)

if response.status_code == 200:
    print("\n✅ User Info:", json.dumps(response.json(), indent=2))
else:
    print(f"\n❌ Error accessing user info (Status: {response.status_code}): {response.text}")

Step 4: Fetch All Applications

def fetch_all_applications(access_token):
headers = {
"Accept": "application/json",
"Authorization": f"Bearer {access_token}"
}
response = requests.get(APPLICATIONS_URL, headers=headers)

if response.status_code == 200:
    print("\n✅ Applications:", json.dumps(response.json(), indent=2))
elif response.status_code == 403:
    print("\n❌ 403 Forbidden - Check if token has correct scope or is expired.")
else:
    print(f"\n❌ Error fetching applications (Status: {response.status_code}): {response.text}")

Step 5: Refresh Token (if needed)

def refresh_access_token(refresh_token):
payload = {
"grant_type": "refresh_token",
"client_id": CLIENT_ID,
"client_secret": CLIENT_SECRET,
"refresh_token": refresh_token
}

response = requests.post(TOKEN_URL, data=payload)
if response.status_code == 200:
    new_token_data = response.json()
    print("\n🔄 Refreshed Token:", json.dumps(new_token_data, indent=2))
    return new_token_data
else:
    print(f"\n❌ Failed to refresh token (Status: {response.status_code}): {response.text}")
    return None

Run OAuth Flow

if name == "main":
auth_code = get_auth_code()
if auth_code:
token_data = get_access_token(auth_code)
if token_data:
access_token = token_data.get("access_token")
refresh_token = token_data.get("refresh_token")

        print("\n✅ Access Token:", access_token)
        fetch_user_info(access_token)
        fetch_all_applications(access_token)

        # If token expires, attempt refresh
        if refresh_token:
            print("\n🔄 Trying to refresh token...")
            new_token_data = refresh_access_token(refresh_token)
            if new_token_data:
                fetch_all_applications(new_token_data.get("access_token"))
    else:
        print("\n❌ Failed to obtain access token.")

✅ User Info: {
"sub": "akadmin",
"email": "[email protected]",
"email_verified": true,
"name": "authentik Default Admin",
"given_name": "authentik Default Admin",
"preferred_username": "akadmin",
"nickname": "akadmin",
"groups": [
"SecurityTeam",
"authentik Admins"
]
}

Metadata

Metadata

Assignees

No one assigned

    Labels

    questionFurther information is requested

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions