What is CVE-2017-0895?

CVE-2017-0895 is a low-severity vulnerability in Nextcloud Server, classified under Improper Authorization. CVSS score: 3.5/10. Published 2017-05-08.

How severe is CVE-2017-0895?

Low severity. CVSS v3 base score is 3.5 out of 10.

Auth bypass in Nextcloud Server

CVE-2017-0895

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.

Published 2017-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Nextcloud Server — versions before 10.0.4 and 11.0.2
Nextcloud Server

Weakness classification (CWE)

References

hackerone.com/reports/203594 (VDB Entry, Third Party Advisory)
nextcloud.com/security/advisory/ (Vendor Advisory)

Frequently asked questions

What is CVE-2017-0895?: CVE-2017-0895 is a low-severity vulnerability in Nextcloud Server, classified under Improper Authorization. CVSS score: 3.5/10. Published 2017-05-08.
How severe is CVE-2017-0895?: Low severity. CVSS v3 base score is 3.5 out of 10.