---
id: CVE-2026-46714
title: 'Misskey is an open source, federated social media platform'
summary: >-
  Misskey is an open source, federated social media platform. IVersions 8.63.0
  and later, but prior to 2026.5.4, contain a vulnerability that can cause the
  Misskey web client to slow down or crash when it applies a malformed theme.
  This is…
severity: none
cwe:
  - CWE-674
published: '2026-08-03'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46714'
references:
  - url: 'https://github.com/misskey-dev/misskey/releases/tag/2026.5.4'
    label: security-advisories@github.com
  - url: >-
      https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00445
epssPercentile: 0.36037
ingestedAt: '2026-09-08T21:11:12.264Z'
---

## Overview

Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.