CVE-2023-39959
Low
Description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
SeverityLow
CVSS3.5
Exploit probability—
Product
Nextcloud Server
PublishedAug 10, 2023
First seenAug 10, 2023
Weakness typeCWE-284Improper access control
How to fix
Update
- nextcloud nextcloud_server25.0.9, 26.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nextcloud nextcloud_server | 25.0.0 ≤ v < 25.0.9, 26.0.0 ≤ v < 26.0.4, 27.0.0 | 25.0.9, 26.0.4 |
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