Nextcloud Server before 11.0.3 is vulnerable to disclosure of valid share tokens for public calendars due to a logical error. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
| Link | Tags |
|---|---|
| https://nextcloud.com/security/advisory/?id=nc-sa-2017-011 | patch vendor advisory broken link |
| https://hackerone.com/reports/218876 | third party advisory |