Auth bypass in Nextcloud Server
CVE-2017-0894
Nextcloud Server before 11.0.3 is vulnerable to disclosure of valid share tokens for public calendars due to a logical error. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.
EPSS: 0.008 (74.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
Affected products
- Nextcloud Server — versions before 11.0.3
- Nextcloud Nextcloud_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (x_refsource_CONFIRM, Patch, Broken Link, Vendor Advisory)
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2017-0894?
- CVE-2017-0894 is a medium-severity vulnerability in Nextcloud Server, classified under Improper Authorization. CVSS score: 4.3/10. Published 2017-05-08.
- How severe is CVE-2017-0894?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2017-0894 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.