Vulnerability in Misskey-Dev Misskey

CVE-2026-103937

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.

Published .

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

  • Misskey-Dev Misskey — versions >= 12.0.0, <= 13.14.2, >= 2023.9.0-beta.1, < 2025.4.1, >= 2025.5.0, < 2026.7.0

Weakness classification (CWE)

References