NextcloudGHSA-G97R-8FFM-HFPJExistance of calendars and addressbooks can be checked by unauthenticated users
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
28.8%
Description
Impact
Unauthenticated users could send a DAV request which reveals whether a calendar or an addressbook with the given identifier exists for the victim.
Patches
It is recommended that the Nextcloud Server is upgraded to 25.0.9, 26.0.4 or 27.0.1
It is recommended that the Nextcloud Enterprise Server is upgraded to 25.0.9, 26.0.4 or 27.0.1
Workarounds
- No workaround available
References
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
Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
28.8%