Workflows do not require password confirmation on API level

Description

Impact

When an attacker manages to get access to an active session of another user via another way, they could delete and modify workflows by sending calls directly to the API bypassing the password confirmation shown in the UI.

Patches

It is recommended that the Nextcloud Server is upgraded to 26.0.9 or 27.1.4
It is recommended that the Nextcloud Enterprise Server is upgraded to 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9 or 27.1.4

Workarounds

• No workaround available

References

• HackerOne
• PullRequest

For more information

If you have any questions or comments about this advisory:

• Create a post in nextcloud/security-advisories
• Customers: Open a support ticket at portal.nextcloud.com