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Vulnerability record · CVE-2017-0895 · published 8 May 2017

CVE-2017-0895: Nextcloud server improper authorization vulnerability

Nextcloud · Nextcloud Server

Nextcloud Server before 10.0.4 and 11.0.2 are vulnerable to disclosure of calendar and addressbook names to other logged-in users. Note that no actual content of the calendar and addressbook has been disclosed.

3.5 CVSS 3.0 Low EPSS 0.72% · top 47.8% CWE-285 · Improper authorizationCWE-200 · Information exposure
3.5CVSS 3.0 base score, v2 3.5
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Nextcloud Server before 10.0.4 and 11.0.2 are vulnerable to disclosure of calendar and addressbook names to other logged-in users. Note that no actual content of the calendar and addressbook has been disclosed.

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackerone.com/reports/203594 Third Party AdvisoryVDB Entry
https://nextcloud.com/security/advisory/?id=nc-sa-2017-012 Vendor Advisory
https://hackerone.com/reports/203594 Third Party AdvisoryVDB Entry
https://nextcloud.com/security/advisory/?id=nc-sa-2017-012 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-0895), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.