{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103937", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-01T14:20:19.156Z", "datePublished": "2026-10-13T18:42:17.022Z", "dateUpdated": "2026-10-13T18:42:17.022Z"}, "containers": {"cna": {"title": "Misskey: Denial of service resulting from insufficient cleanup processing during file uploads", "problemTypes": [{"descriptions": [{"cweId": "CWE-459", "lang": "en", "description": "CWE-459: Incomplete Cleanup", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-m9xp-2fvm-pfmq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-m9xp-2fvm-pfmq"}, {"name": "https://github.com/misskey-dev/misskey/pull/17750", "tags": ["x_refsource_MISC"], "url": "https://github.com/misskey-dev/misskey/pull/17750"}, {"name": "https://github.com/misskey-dev/misskey/commit/3f28489fb856e6e07a16290f3ea1e1261572b527", "tags": ["x_refsource_MISC"], "url": "https://github.com/misskey-dev/misskey/commit/3f28489fb856e6e07a16290f3ea1e1261572b527"}, {"name": "https://github.com/misskey-dev/misskey/releases/tag/2026.7.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/misskey-dev/misskey/releases/tag/2026.7.0"}], "affected": [{"vendor": "misskey-dev", "product": "misskey", "versions": [{"version": ">= 12.0.0, <= 13.14.2", "status": "affected"}, {"version": ">= 2023.9.0-beta.1, < 2025.4.1", "status": "affected"}, {"version": ">= 2025.5.0, < 2026.7.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-13T18:42:17.022Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-m9xp-2fvm-pfmq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "misskey", "vendor": "misskey-dev", "versions": [{"status": "affected", "version": ">= 12.0.0, <= 13.14.2"}, {"status": "affected", "version": ">= 2023.9.0-beta.1, < 2025.4.1"}, {"status": "affected", "version": ">= 2025.5.0, < 2026.7.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-103937", "lastModified": "2026-10-13T19:17:54.387", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-13T19:17:54.387", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/misskey-dev/misskey/commit/3f28489fb856e6e07a16290f3ea1e1261572b527"}, {"source": "security-advisories@github.com", "url": "https://github.com/misskey-dev/misskey/pull/17750"}, {"source": "security-advisories@github.com", "url": "https://github.com/misskey-dev/misskey/releases/tag/2026.7.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-m9xp-2fvm-pfmq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-459"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}