CVE-2026-45154: Nextcloud: Improper Access Control in Collectives
nextcloud · security-advisories
Affected: nextcloud security-advisories · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 8% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- nextcloud · security-advisories>= 2.6.0, < 4.3.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- nextcloud
- Published
- June 2026
- Bounty reports
- 1 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2026-45154
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- View-only guests could see deleted Collectives pages in the trashbinNextcloud · 2026 · low severityValid
CoverageNo articles yet
No CyberSIXT article names CVE-2026-45154 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.