{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-61854", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-10T20:28:17.513Z", "datePublished": "2026-10-30T18:25:28.484Z", "dateUpdated": "2026-10-30T18:25:28.484Z"}, "containers": {"cna": {"title": "VoiceSentinel: Race condition in report buffer cleanup can corrupt transcript data and cause unbounded disk growth", "problemTypes": [{"descriptions": [{"cweId": "CWE-362", "lang": "en", "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-667", "lang": "en", "description": "CWE-667: Improper Locking", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/jackh54/VoiceSentinel/security/advisories/GHSA-vhqx-3242-77j7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jackh54/VoiceSentinel/security/advisories/GHSA-vhqx-3242-77j7"}, {"name": "https://github.com/jackh54/VoiceSentinel/commit/a8c9f926d19969a19d05eee2a508719aea7f109c", "tags": ["x_refsource_MISC"], "url": "https://github.com/jackh54/VoiceSentinel/commit/a8c9f926d19969a19d05eee2a508719aea7f109c"}, {"name": "https://github.com/jackh54/VoiceSentinel/releases/tag/v3.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/jackh54/VoiceSentinel/releases/tag/v3.3.1"}], "affected": [{"vendor": "jackh54", "product": "VoiceSentinel", "versions": [{"version": ">= 2.2.1, < 3.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-30T18:25:28.484Z"}, "descriptions": [{"lang": "en", "value": "VoiceSentinel is a real-time voice moderation system for Minecraft servers. From 2.2.1 until 3.3.1, the optional report buffer feature has a race between retention cleanup and normal transcript writes. In `report_buffer.py`, `_maybe_cleanup()` uses an unlocked dictionary for once-per-hour cleanup throttling, allowing simultaneous `_cleanup_tenant()` operations for one tenant. Cleanup reads `transcripts.jsonl` and rewrites it in place without file locking or atomic replacement, while `report_buffer_append_async` uses `asyncio.to_thread` to append without synchronization. In `main.py`, concurrent `_processing_worker` tasks make this reachable in normal operation; `processing.worker_count` of two or more and public-pool servers sharing a `server_key` increase collisions. With `report_buffer.enabled` set to true, racing writes can lose, duplicate or corrupt transcript data and defeat `report_buffer.retention_seconds` pruning, allowing unbounded disk growth that can exhaust storage and crash the host or other services sharing it. The feature is opt-in and disabled by default. This issue is fixed in version 3.3.1."}], "source": {"advisory": "GHSA-vhqx-3242-77j7", "discovery": "UNKNOWN"}}}}

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