CVE-2023-30540: Nextcloud Talk

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Nextcloud Talk is a chat, video & audio call extension for Nextcloud. In affected versions a user that was added later to a conversation can use this information to get access to data that was deleted before they were added to the conversation. This issue has been patched in version 15.0.5 and it is recommended that users upgrad to 15.0.5. There are no known workarounds for this issue.

Affected products

• Nextcloud Talk: from 15.0.0, before 15.0.5 (fixed in 15.0.5)

Published 2023-04-17. Last modified 2026-06-17.