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CVE-2026-77166

LOW
2.4
CVSS Score
Published: September 21, 2026 at 03:25 PM UTC
Updated: September 22, 2026 at 08:11 PM UTC
1 product affected across 1 vendorCollectives

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Severity
LOW2.4
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Collectives· Nextcloudnextcloud-app
60%
3.2.1 ≤ v ≤ 3.5.03.2.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://hackerone.com/reports/3599470

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.4LOWhackerone
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-840

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