Patch Forecast
Amber warning
Patch this week.

CVE-2026-103937

Misskey is an open source, federated social media platform

Risk score
66/100
CVSS
8.7 v4.0
Exploit chance (30 days)
0.5%
Published
13 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is
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 …
Affected
See advisory
Fix
Upgrade the product to 2026.7.0 or later.
Exploitation
No known exploitation

Why it is Amber

  • CVSS 8.7 high
  • Remotely exploitable without logging in

References

Original 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.

Last activity 13 Oct 2026. Patch Forecast updates every hour.