What’s Vulnerable › Vulnerabilities

CVE-2017-0895

• Severity: low (CVSS 3.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-08 · updated 2026-06-17
• Weakness: CWE-285

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.

Affected products

• Nextcloud Server: from 10.0.0 before 10.0.4; from 11.0.0 before 11.0.2 — fixed in 10.0.4, 11.0.2

How to fix

Upgrade to a fixed version: Nextcloud Server 10.0.4, 11.0.2. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/203594
• https://nextcloud.com/security/advisory/?id=nc-sa-2017-012
• https://hackerone.com/reports/203594
• https://nextcloud.com/security/advisory/?id=nc-sa-2017-012

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