CVE-2026-104189 Nextcloud 3D Viewer - Broken Access Control

Nextcloud 3D Viewer 1.7.9 through 3.3.1 contains an information disclosure vulnerability caused by missing share authorization in PublicFileController, letting attackers with share tokens access password-protected 3D model files without authentication, exploit requires knowledge of share token.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-306

Vendor fix

Upgrade to version 3.3.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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