CVE-2026-45267
MEDIUMNextcloud: Missing permission check for from submissions
Title source: cnaDescription
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_Confirm x_refsource_confirm
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f
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