CVE-2026-77166: CWE-840 Business Logic Errors in Nextcloud Collectives
The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
CVE-2026-77166: CWE-840 Business Logic Errors in Nextcloud Collectives
Description
The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
CVSS v3.0
Score 2.4low
Affected software
Nextcloud
Collectives
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-08-20T15:00:00.606Z
- Cvss Version
- 3.0
- State
- PUBLISHED
Threat ID: 6ab14e0755bf5e2cf5168f81
Added to database: 09/21/2026, 15:32:23 UTC
Last updated: 09/21/2026, 15:32:23 UTC
Views: 1
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