CVE-2026-103937

EUVD-2026-99240
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 41.43%
Common Weakness Enumeration
References
https://github.com/misskey-dev/misskey/commit/3f28489fb856e6e07a16290f3ea1e1261572b527
https://github.com/misskey-dev/misskey/pull/17750
https://github.com/misskey-dev/misskey/releases/tag/2026.7.0
https://github.com/misskey-dev/misskey/security/advisories/GHSA-m9xp-2fvm-pfmq