What’s Vulnerable › Vulnerabilities

CVE-2020-8295

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-26 · updated 2026-06-17
• Weakness: CWE-400

Description

A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user.

Affected products

• Nextcloud Server: before 20.0.0 — fixed in 20.0.0

How to fix

Upgrade to a fixed version: Nextcloud Server 20.0.0. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/812754
• https://nextcloud.com/security/advisory/?id=NC-SA-2021-003
• https://hackerone.com/reports/812754
• https://nextcloud.com/security/advisory/?id=NC-SA-2021-003

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