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CVE-2026-45267 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nextcloud/forms/pull/3269	[email protected]	Source CodeVendor
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4gh-f8x6-m55f	[email protected]	AdvisoryRemedyVendor
https://hackerone.com/reports/3628817	[email protected]	Issue TrackingPermission Required

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]
CWE-862	Missing Authorization	[email protected]

Affected Products

Product	Versions
Nextcloud Forms	< 5.2.6 (semver)
CPE cpe:2.3:a:nextcloud:nextcloud:::::::: Remediation Upgrade: 5.2.6moderate effort Workaround:low effort Disable the Forms app.

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 22, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 1, 2026	New CVE Received	[email protected]