Technology · Nextcloud
Nextcloud Server vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 7 vulnerabilities in Nextcloud Server: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-45810, was published on 1 June 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Nextcloud Server
Nextcloud Server is an open-source content collaboration platform that allows users to store, share, and sync files and data.
Latest Nextcloud Server vulnerabilities
- CVE-2026-45810: Nextcloud Server authorization bypass in file commentsmediumCVSS 6.8
- CVE-2026-45691: Nextcloud Server 2FA bypass in DAV endpoints via session cookie reusemediumCVSS 5.9
- CVE-2026-45690: Nextcloud Server 2FA bypass via session token replaymediumCVSS 5.9
- CVE-2026-45285: Nextcloud Server hidden public link creation in Teams sharingmediumCVSS 6.4
- CVE-2026-45283: Nextcloud Server improper authentication in files_lock appmediumCVSS 6.3
- CVE-2026-45282: Nextcloud Server access control bypass in Text attachmentsmediumCVSS 6.5
- CVE-2026-45281: Nextcloud Server authorization bypass in calendar delegationhighCVSS 8.1
Most severe Nextcloud Server vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-45281: Nextcloud Server authorization bypass in calendar delegationhighCVSS 8.1
- CVE-2026-45810: Nextcloud Server authorization bypass in file commentsmediumCVSS 6.8
- CVE-2026-45282: Nextcloud Server access control bypass in Text attachmentsmediumCVSS 6.5
- CVE-2026-45285: Nextcloud Server hidden public link creation in Teams sharingmediumCVSS 6.4
- CVE-2026-45283: Nextcloud Server improper authentication in files_lock appmediumCVSS 6.3
- CVE-2026-45691: Nextcloud Server 2FA bypass in DAV endpoints via session cookie reusemediumCVSS 5.9
- CVE-2026-45690: Nextcloud Server 2FA bypass via session token replaymediumCVSS 5.9
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/nextcloud-server.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Nextcloud Server vulnerabilities", https://junglewise.ai/threats/technologies/nextcloud-server, 26 September 2026.