Every CVE Search/ Get API key

CVE-2017-0883

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via...

6.4 Medium

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.59%Unchanged since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.4

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Record
CVE-2017-0883
CVSS 3.0
6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS 2.0
5.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:N
Weakness
CWE-275, CWE-732
Updated
2026-11-02
CVE List No score

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Record
CVE-2017-0883
Weakness
CWE-275
Updated
2026-11-02
EUVDEUVD-2017-1237 No score

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Record
EUVD-2017-1237
Updated
2026-11-03
GitHub AdvisoriesGHSA-g265-v379-5vwj 6.4

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via...

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Record
GHSA-g265-v379-5vwj
CVSS 3.0
6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-732
Updated
2026-11-02
OSV 6.4

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Record
CVE-2017-0883
CVSS 3.0
6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-0883 is a medium vulnerability (CVSS 6.4) in Hackerone Nextcloud Server, published April 5, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. No source names a fixed version.

References

MoveEnter Open