CVE-2026-45267

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.

PUBLISHED Reserved 2026-05-11 | Published 2026-06-01 | Updated 2026-06-01 | Assigner GitHub_M

Problem types

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

CWE-862: Missing Authorization

Product status

References

github.com/...sories/security/advisories/GHSA-r4gh-f8x6-m55f

github.com/nextcloud/forms/pull/3269

hackerone.com/reports/3628817

cve.org (CVE-2026-45267)

nvd.nist.gov (CVE-2026-45267)

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