CVE-2026-45267

MEDIUM EPSS 20.7%

Published Jun 1, 20261mo ago · Modified Jun 17, 20262w ago

6.5 CVSS 3.1

Medium

Published Jun 1, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

6.5

Exploitability

2.8

Impact

3.6

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity None

Availability None

Threat Intelligence

EPSS Exploit Probability

20.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

CWE-862 Missing Authorization Authorization

References 3

github.com https://github.com/nextcloud/forms/pull/3269
github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f
hackerone.com https://hackerone.com/reports/3628817

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.