CVEvulnerability
CVE-2023-39959
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-08-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 3.5 LOW — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-284
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.
Affected configurations
• nextcloud nextcloud server (>= 25.0.0 < 25.0.9)
• nextcloud nextcloud server (>= 26.0.0 < 26.0.4)
• nextcloud nextcloud server 27.0.0
Related
Weakness · CWE (1)
- CWE-284 Improper Access Control weakness
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj Vendor Advisory
- https://github.com/nextcloud/server/pull/38747 Patch
- https://hackerone.com/reports/1832126 Permissions Required
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj Vendor Advisory
- https://github.com/nextcloud/server/pull/38747 Patch
- https://hackerone.com/reports/1832126 Permissions Required