Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. It is possible to make a user send any POST request with an arbitrary body given they click on a malicious deep link on a Windows computer. (e.g. in an email, chat link, etc). There are currently no known workarounds. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.2.
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
Link | Tags |
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https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4gfv-xqpx-42qj | third party advisory |
https://github.com/nextcloud/desktop/pull/5106 | third party advisory patch |