CVE-2026-45810 Details
Description
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 31.0.0 to before 31.0.12, and 32.0.0 to before 32.0.3, a missing check of a relation allowed authenticated users with access to any file comment, to read the content of all comments. It is recommended that the Nextcloud Server is upgraded to 31.0.12 or 32.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 21.0.9.20, 22.2.10.35, 23.0.12.31, 24.0.12.30, 25.0.13.25, 26.0.13.22, 27.1.11.22, 28.0.14.13, 29.0.16.10, 30.0.17.5, 31.0.12 or 32.0.3
A vulnerability in Nextcloud Server versions 31.0.0 prior to 31.0.12 and 32.0.0 prior to 32.0.3, as well as in Nextcloud Enterprise Server versions 21.0.0 prior to 21.0.9.20, 22.0.0, 23.0.0, 24.0.0, 25.0.0, 26.0.0, 27.0.0, 28.0.0, 29.0.0, 30.0.0, 31.0.0, and 32.0.0, allows authenticated users with access to any file comment to read the content of all comments. This issue arises from a missing check of a relation, which could be exploited by users to access comments they should not be able to.
Users are advised to upgrade Nextcloud Server to version 31.0.12 or 32.0.3. Nextcloud Enterprise Server users should upgrade to version 21.0.9.20, 22.2.10.35, 23.0.12.31, 24.0.12.30, 25.0.13.25, 26.0.13.22, 27.1.11.22, 28.0.14.13, 29.0.16.10, 30.0.17.5, 31.0.12 or 32.0.3.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 2, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-285v-p9x9-cjhj | [email protected] | Vendor Advisory |
| https://github.com/nextcloud/server/pull/56982 | [email protected] | Issue TrackingPatch |
| https://hackerone.com/reports/3425534 | [email protected] | Permissions Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| nextcloud nextcloud server | >= 31.0.0, < 31.0.12 >= 32.0.0, < 32.0.3 >= 21.0.0, < 21.0.9.20 >= 22.0.0, < 22.2.10.35 >= 23.0.0, < 23.0.12.31 >= 24.0.0, < 24.0.12.30 >= 25.0.0, < 25.0.13.25 >= 26.0.0, < 26.0.13.22 >= 27.0.0, < 27.1.11.22 >= 28.0.0, < 28.0.14.13 >= 29.0.0, < 29.0.16.10 >= 30.0.0, < 30.0.17.5 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 4, 2026 | Initial Analysis | [email protected] |
| Jun 1, 2026 | New CVE Received | [email protected] |