mosescha1972 opened a new issue, #38429:
URL: https://github.com/apache/superset/issues/38429
### Bug description
Description:
When an Alert is triggered in Superset, the webhook payload contains an
incorrect url value.
Raw body received by the webhook:
{
"name": "test8: Table",
"header": {
"notification_format": "TEXT",
"notification_type": "Alert",
"notification_source": "chart",
"chart_id": 73,
"dashboard_id": null
},
"text": null,
"description": null,
"url":
"http://:8888/explore/?form_data=%7B%22slice_id%22:+73%7D&force=true";
}
Webhook log:
172.18.0.1 - - [05/Mar/2026 06:29:00] "POST /superset-proxy HTTP/1.1" 200
Issue:
The url field in the webhook payload is incorrect:
It uses port 8888
It contains a form_data parameter
The hostname is empty (http://:8888)
However, the actual chart URL in the browser is:
http://:8088/explore/?form_data_key=0oYdXaJNOrc&slice_id=73
Differences:
Port mismatch (8888 vs 8088)
form_data vs form_data_key
Missing hostname in the generated URL
Expected behavior:
The url field in the Alert webhook payload should match the actual
accessible chart URL, including:
Correct hostname
Correct port (e.g., 8088)
Proper query parameters (e.g., form_data_key and slice_id)
Environment:
Superset master branch (December 25 build)
Alert triggered from chart (slice_id=73)
Webhook target: Mattermost proxy endpoint
Please investigate how the chart URL is constructed in the Alert execution
flow and ensure it uses the correct external base URL configuration.
### Screenshots/recordings
_No response_
### Superset version
master / latest-dev
### Python version
3.9
### Node version
16
### Browser
Chrome
### Additional context
_No response_
### Checklist
- [ ] I have searched Superset docs and Slack and didn't find a solution to
my problem.
- [ ] I have searched the GitHub issue tracker and didn't find a similar bug
report.
- [ ] I have checked Superset's logs for errors and if I found a relevant
Python stacktrace, I included it here as text in the "additional context"
section.
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