CVE-2026-45543

5.3 MEDIUM
Published: June 01, 2026 Modified: June 04, 2026
View on NVD

Description

Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/nextcloud/forms/pull/3291
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh
Source: security-advisories@github.com
Mitigation Vendor Advisory
https://hackerone.com/reports/3617352
Source: security-advisories@github.com
Permissions Required

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.3%
18th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

nextcloud