CVE-2018-3762
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for...
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
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
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
- Record
CVE-2018-3762- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-284, CWE-281
- Updated
- 2026-11-02
CVE List No score
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
- Record
CVE-2018-3762- Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2018-15568 No score
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
- Record
EUVD-2018-15568- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6p7m-f494-cjvp
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for...
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
- Record
GHSA-6p7m-f494-cjvp- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-281
- Updated
- 2026-11-02
OSV
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
- Record
CVE-2018-3762- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11087-1 No score
nextcloud-22.1.1-1.2 on GA media
These are all security issues fixed in the nextcloud-22.1.1-1.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11087-1- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-3762 is a medium vulnerability (CVSS 4.3) in Hackerone Nextcloud Server, published July 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.