CVE-2026-103937 (GCVE-0-2026-103937)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:42 – Updated: 2026-10-14 16:03
VLAI
EPSS
VEX
Title
Misskey: Denial of service resulting from insufficient cleanup processing during file uploads
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 deny service regardless of whether federation is enabled. This issue is fixed in version 2026.7.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:03 UTC
CWE
- CWE-459 - Incomplete Cleanup
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/misskey-dev/misskey/security/a… | x_refsource_CONFIRM |
| https://github.com/misskey-dev/misskey/pull/17750 | x_refsource_MISC |
| https://github.com/misskey-dev/misskey/commit/3f2… | x_refsource_MISC |
| https://github.com/misskey-dev/misskey/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| misskey-dev | misskey |
Affected:
>= 12.0.0, <= 13.14.2
Affected: >= 2023.9.0-beta.1, < 2025.4.1 Affected: >= 2025.5.0, < 2026.7.0 |
guessed |
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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