---
id: CVE-2026-103937
title: 'Misskey is an open source, federated social media platform'
summary: >-
  Misskey is an open source, federated social media platform. From 13.0.0 until
  2025.4.1 and from 2025.5.0 until 2026.7.0, cleanup processing may not execute
  during file uploads. Repeated uploads can exhaust storage or file descriptors
  and…
severity: none
cwe:
  - CWE-459
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T19:17:54.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103937'
references:
  - url: >-
      https://github.com/misskey-dev/misskey/commit/3f28489fb856e6e07a16290f3ea1e1261572b527
    label: security-advisories@github.com
  - url: 'https://github.com/misskey-dev/misskey/pull/17750'
    label: security-advisories@github.com
  - url: 'https://github.com/misskey-dev/misskey/releases/tag/2026.7.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/misskey-dev/misskey/security/advisories/GHSA-m9xp-2fvm-pfmq
    label: security-advisories@github.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:28.906Z'
---

## Overview

Misskey is an open source, federated social media platform. From 13.0.0 until 2025.4.1 and from 2025.5.0 until 2026.7.0, cleanup processing may not execute during file uploads. Repeated uploads can exhaust storage or file descriptors and deny service regardless of whether federation is enabled. This issue is fixed in version 2026.7.0.

## Remediation

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