CVE-2025-66556

Nextcloud talk is a video & audio conferencing app for Nextcloud. Prior to 20.1.8 and 21.1.2, a participant with chat permissions was able to delete poll drafts of other participants within the conversation based on their numeric ID. This vulnerability is fixed in 20.1.8 and 21.1.2.

More information : https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pr9f-vqgg-m2jh