CVE-2026-77166

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.

Score

CVSS 3.0 2.4 Low

Status

Deferred - support@hackerone.com

Published

2026-09-21

Last modified

2026-09-21

Weaknesses

CWE-840

Affected products

• Collectives (Nextcloud)

References

• https://hackerone.com/reports/3599470