CVE-2026-103937
Received
Received - Intake
Storage Exhaustion via Uncleaned File Uploads in Misskey
Vulnerability report for CVE-2026-103937, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-13
Assigner: GitHub, Inc.
Description
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| misskey-dev | misskey | >= 12.0.0, <= 13.14.2 |
| misskey-dev | misskey | >= 2023.9.0-beta.1, < 2025.4.1 |
| misskey-dev | misskey | >= 2025.5.0, < 2026.7.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-459 | The product does not properly "clean up" and remove temporary or supporting resources after they have been used. |
