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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://hackerone.com/reports/3599470 |
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History
Mon, 21 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Mon, 21 Sep 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Inadequate Input Validation in Emoji Update Endpoint Causes Layout Breakage |
Mon, 21 Sep 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nextcloud
Nextcloud collectives |
|
| Vendors & Products |
Nextcloud
Nextcloud collectives |
Mon, 21 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Weaknesses | CWE-840 | |
| References |
| |
| Metrics |
cvssV3_0
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Status: PUBLISHED
Assigner: hackerone
Published: 2026-09-21T15:25:33.269Z
Updated: 2026-09-21T18:43:30.904Z
Reserved: 2026-08-20T15:00:00.606Z
Link: CVE-2026-77166
Updated: 2026-09-21T18:43:24.375Z
Status : Deferred
Published: 2026-09-21T16:17:24.013
Modified: 2026-09-22T20:00:03.713
Link: CVE-2026-77166
No data.