CVE-2026-45267

MEDIUM

Nextcloud: Missing permission check for from submissions

Title source: cna
STIX 2.1

Description

Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/nextcloud/forms/pull/3269
X_Refsource_Misc x_refsource_misc
https://hackerone.com/reports/3628817

Scores

CVSS v3 6.5
EPSS 0.0029
EPSS Percentile 20.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200 CWE-862
Status published
Products (1)
nextcloud/security-advisories < 5.2.6
Published Jun 01, 2026
Tracked Since Jun 01, 2026