PT-2026-45538 · Nextcloud · Nextcloud Server+1

Dorra Jaouad + 1 · Published 2026-06-01 · Updated 2026-06-17 · CVE-2026-45810

NVD

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

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

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-45810

Affected Products

Nextcloud Server

Security-Advisories

References · 5

• https://github.com/nextcloud/server/pull/56982 · Patch
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-285v-p9x9-cjhj · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45810 · Security Note
• https://hackerone.com/reports/3425534 · Note
• https://twitter.com/threatcluster/status/2067291586774323342 · Twitter Post