Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

• CISA KEV Not listed.
• EPSS 0.020, the 80th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 28 Mar 2017. New records show when each source confirmed them.

Sources

• CVE List: CVE-2016-9461
• NVD: CVE-2016-9461

References from the CNA

• owncloud.org/security/advisory/?id=oc-sa-2016-014
• nextcloud.com/security/advisory/?id=nc-sa-2016-004
• www.securityfocus.com/bid/97276 vdb-entrybid
• github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47
• github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9
• github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e
• github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547
• hackerone.com/reports/145950
• github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.