CVE-2026-45154

Nextcloud: Improper Access Control in Collectives

State: Published
Severity: 2.6 Low
Published: Jun 1, 2026
Updated: Jun 1, 2026
Reserved: May 8, 2026

Description

Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This issue has been patched in version 4.3.0.

Scores

CVSS	Score	Vector	Source
3.1	2.6 Low	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
security-advisoriesnextcloud	>= 2.6.0, < 4.3.0Affected

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8mpv-ggq8-hf3w
https://github.com/nextcloud/collectives/pull/2432
https://hackerone.com/reports/3521434

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