CVE-2016-9461: nextcloud nextcloud_server Permission Issues
Vulnerability summary
CVE-2016-9461 is a medium (CVSS 4.3) Permission Issues vulnerability in nextcloud nextcloud_server. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 28-03-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
2.00%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 2.00% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Nextcloud1 product
- nextcloud_server< 9.0.52
Owncloud1 product
- owncloud< 9.0.4
2 vendors · 2 products
References
9 links- github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47X Refsource MISCIssue TrackingPatchThird Party Advisory
- github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9X Refsource MISCIssue TrackingPatchThird Party Advisory
- github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36eX Refsource MISCIssue TrackingPatchThird Party Advisory
- github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547X Refsource MISCIssue TrackingPatchThird Party Advisory
- github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120ccX Refsource MISCIssue TrackingPatchThird Party Advisory