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CVE-2016-9461
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions.…
Medium4.3EPSS 2.0%
- Published
- Updated
- Reserved
- Assigned by
- hackerone
Description
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify existing files.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4
- affected Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4
References (9)
- https://owncloud.org/security/advisory/?id=oc-sa-2016-014 (opens in a new tab)x_refsource_MISCx_transferred
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-004 (opens in a new tab)x_refsource_MISCx_transferred
- 97276 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547 (opens in a new tab)x_refsource_MISCx_transferred
- https://hackerone.com/reports/145950 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .