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Exception via malformed API request to /available-ips/ #8899

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opened 2025-12-29 20:42:39 +01:00 by adam · 0 comments
adam commented 2025-12-29 20:42:39 +01:00
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Originally created by @candlerb on GitHub (Dec 1, 2023).

Originally assigned to: @jeremystretch on GitHub.

NetBox version

v3.6.6

Python version

3.8

Steps to Reproduce

  1. Get the ID of a prefix (in this case I'm using prefix 32)
  2. Use curl to make a POST API request with empty body but default Content-Type: application/x-www-form-urlencoded
curl -d '' -vsS -H "Authorization: Token $TOKEN" "$NETBOX/api/ipam/prefixes/32/available-ips/"

Expected Behavior

Request is either accepted (since the body of the request isn't used), or is validated and rejected with a well-formed 4xx response from the API

Observed Behavior

An exception is raised:

< HTTP/1.1 500 Internal Server Error
...
                            <p>
                                There was a problem with your request. Please contact an administrator.
                            </p>

                        <hr />
                        <p>
                            The complete exception is provided below:
                        </p>
<pre class="block"><strong>&lt;class &#x27;AttributeError&#x27;&gt;</strong><br />
This QueryDict instance is immutable

The backtrace is mailed out to ADMINS if this has been set up.

Traceback (most recent call last):
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 56, in wrapper_view
    return view_func(*args, **kwargs)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 104, in view
    return self.dispatch(request, *args, **kwargs)
  File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/opt/netbox/netbox/ipam/api/views.py", line 451, in post
    return super().post(request, pk)
  File "/opt/netbox/netbox/ipam/api/views.py", line 293, in post
    requested_objects = self.prep_object_data(requested_objects, available_objects, parent)
  File "/opt/netbox/netbox/ipam/api/views.py", line 434, in prep_object_data
    request_data.update({
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/utils/datastructures.py", line 211, in update
    self.setlistdefault(key).append(value)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/http/request.py", line 584, in setlistdefault
    self._assert_mutable()
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/http/request.py", line 552, in _assert_mutable
    raise AttributeError("This QueryDict instance is immutable")

Exception Type: AttributeError at /api/ipam/prefixes/32/available-ips/
Exception Value: This QueryDict instance is immutable
Raised during: ipam.api.views.PrefixAvailableIPAddressesView
Request information:
USER: admin
Originally created by @candlerb on GitHub (Dec 1, 2023). Originally assigned to: @jeremystretch on GitHub. ### NetBox version v3.6.6 ### Python version 3.8 ### Steps to Reproduce 1. Get the ID of a prefix (in this case I'm using prefix 32) 2. Use curl to make a POST API request with empty body but default `Content-Type: application/x-www-form-urlencoded` ``` curl -d '' -vsS -H "Authorization: Token $TOKEN" "$NETBOX/api/ipam/prefixes/32/available-ips/" ``` ### Expected Behavior Request is either accepted (since the body of the request isn't used), or is validated and rejected with a well-formed 4xx response from the API ### Observed Behavior An exception is raised: ``` < HTTP/1.1 500 Internal Server Error ... <p> There was a problem with your request. Please contact an administrator. </p> <hr /> <p> The complete exception is provided below: </p> <pre class="block"><strong>&lt;class &#x27;AttributeError&#x27;&gt;</strong><br /> This QueryDict instance is immutable ``` The backtrace is mailed out to ADMINS if this has been set up. ``` Traceback (most recent call last): File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner response = get_response(request) File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 56, in wrapper_view return view_func(*args, **kwargs) File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 104, in view return self.dispatch(request, *args, **kwargs) File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 509, in dispatch response = self.handle_exception(exc) File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 469, in handle_exception self.raise_uncaught_exception(exc) File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception raise exc File "/opt/netbox/venv/lib/python3.8/site-packages/rest_framework/views.py", line 506, in dispatch response = handler(request, *args, **kwargs) File "/opt/netbox/netbox/ipam/api/views.py", line 451, in post return super().post(request, pk) File "/opt/netbox/netbox/ipam/api/views.py", line 293, in post requested_objects = self.prep_object_data(requested_objects, available_objects, parent) File "/opt/netbox/netbox/ipam/api/views.py", line 434, in prep_object_data request_data.update({ File "/opt/netbox/venv/lib/python3.8/site-packages/django/utils/datastructures.py", line 211, in update self.setlistdefault(key).append(value) File "/opt/netbox/venv/lib/python3.8/site-packages/django/http/request.py", line 584, in setlistdefault self._assert_mutable() File "/opt/netbox/venv/lib/python3.8/site-packages/django/http/request.py", line 552, in _assert_mutable raise AttributeError("This QueryDict instance is immutable") Exception Type: AttributeError at /api/ipam/prefixes/32/available-ips/ Exception Value: This QueryDict instance is immutable Raised during: ipam.api.views.PrefixAvailableIPAddressesView Request information: USER: admin ```
adam added the type: bugstatus: acceptedseverity: low labels 2025-12-29 20:42:39 +01:00
adam closed this issue 2025-12-29 20:42:40 +01:00
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Reference: starred/netbox#8899
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