VulnerabilityAnalyzed
CVE-2026-45543
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.
MEDIUM 5.3EPSS 0.27%
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-552
- Affected
- nextcloud/forms
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/forms/pull/3291Issue Tracking, Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhhMitigation, Vendor Advisory
- https://hackerone.com/reports/3617352Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.