CVE-2026-45267

medium

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

https://hackerone.com/reports/3628817

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f

https://github.com/nextcloud/forms/pull/3269

Details

Source: Mitre, NVD

Published: 2026-06-01

Updated: 2026-06-01

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N