Resource exhaustion in Nextcloud Server
CVE-2020-8293
A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.016 (72.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nextcloud Nextcloud_server
- N/a Nextcloud Server — versions Fixed in 20.0.2, 19.0.5, 18.0.11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (x_refsource_MISC, Broken Link, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-8293?
- CVE-2020-8293 is a medium-severity vulnerability in Nextcloud Server, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2021-01-26.
- How severe is CVE-2020-8293?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-8293 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.