What’s Vulnerable › Vulnerabilities

CVE-2020-8119

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-04 · updated 2026-06-17
• Weakness: CWE-285

Description

Improper authorization in Nextcloud server 17.0.0 causes leaking of previews and files when a file-drop share link is opened via the gallery app.

Affected products

• Nextcloud Server: before 15.0.13; from 16.0.0 before 16.0.6; from 17.0.0 before 17.0.1 — fixed in 15.0.13, 16.0.6, 17.0.1

How to fix

Upgrade to a fixed version: Nextcloud Server 15.0.13, 16.0.6, 17.0.1. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
• https://hackerone.com/reports/719426
• https://nextcloud.com/security/advisory/?id=NC-SA-2019-012
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
• https://hackerone.com/reports/719426
• https://nextcloud.com/security/advisory/?id=NC-SA-2019-012

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