CVE-2017-0883 json
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue.
published 2017-04-05 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-1237
- cvss
- 6.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
Affected products
- Nextcloud Nextcloud Server
Classification
References
-
nextcloud.com
/security/advisory/?id=nc-sa-2017-001
patch, vendor-advisory
-
hackerone.com
/reports/169680
third-party-advisory
Sources
- CVE List CVE-2017-0883
- NVD CVE-2017-0883
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