What’s Vulnerable › Vulnerabilities

CVE-2018-3776

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-12 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper input validator in Nextcloud Server prior to 12.0.3 and 11.0.5 could lead to an attacker's actions not being logged in the audit log.

Affected products

• Nextcloud Server: from 11.0.0 before 11.0.5; from 12.0.0 before 12.0.3 — fixed in 11.0.5, 12.0.3

How to fix

Upgrade to a fixed version: Nextcloud Server 11.0.5, 12.0.3. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/232347
• https://nextcloud.com/security/advisory/?id=NC-SA-2018-006
• https://hackerone.com/reports/232347
• https://nextcloud.com/security/advisory/?id=NC-SA-2018-006

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