Medusa is an automatic video library manager for TV shows. Versions prior to 1.0.19 are vulnerable to unauthenticated blind server-side request forgery (SSRF). The testslack
request handler in medusa/server/web/home/handler.py
does not validate the user-controlled slack_webhook
variable and passes it to the notifiers.slack_notifier.test_notify
method, then _notify_slack
and finally _send_slack
method, which sends a POST request to the user-controlled URL on line 103 in /medusa/notifiers/slack.py
, which leads to a blind server-side request forgery (SSRF). This issue allows for crafting POST requests on behalf of the Medusa server. Version 1.0.19 contains a fix for the issue.
github.com/pymedusa/Medusa/blob/3d656652ab277e47689483912ed7fc443e7023e8/medusa/notifiers/slack.py
github.com/pymedusa/Medusa/blob/3d656652ab277e47689483912ed7fc443e7023e8/medusa/server/web/home/handler.py
github.com/pymedusa/Medusa/releases/tag/v1.0.19
github.com/pymedusa/Medusa/security/advisories/GHSA-8mcr-vffr-jwxv
securitylab.github.com/advisories/GHSL-2023-201_GHSL-2023-202_Medusa/