{"id":"CVE-2026-61854","aliases":[],"cve":{"records":[{"id":"CVE-2026-61854","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-10T20:28:17.513Z","published":"2026-10-30T18:25:28.484Z","modified":"2026-10-30T18:25:28.484Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-30T18:25:28.484Z"}],"references":[{"url":"https://github.com/jackh54/VoiceSentinel/security/advisories/GHSA-vhqx-3242-77j7","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/jackh54/VoiceSentinel/commit/a8c9f926d19969a19d05eee2a508719aea7f109c","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/jackh54/VoiceSentinel/releases/tag/v3.3.1","tags":["x_refsource_MISC"],"source":"GitHub_M"}],"weaknesses":[{"id":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","source":"GitHub_M"},{"id":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","source":"GitHub_M"},{"id":"CWE-667","description":"CWE-667: Improper Locking","source":"GitHub_M"}],"applicability":[],"prioritization":[]},"title":"VoiceSentinel: Race condition in report buffer cleanup can corrupt transcript data and cause unbounded disk growth","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"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.","score":8.2,"severity":"high","published":"2026-10-30T18:25:28.484Z","modified":"2026-10-30T18:25:28.484Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"jackh54","name":"VoiceSentinel","platforms":[],"versions":[{"version":">= 2.2.1, < 3.3.1","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-61854"}],"remediation":[],"references":["https://github.com/jackh54/VoiceSentinel/security/advisories/GHSA-vhqx-3242-77j7","https://github.com/jackh54/VoiceSentinel/commit/a8c9f926d19969a19d05eee2a508719aea7f109c","https://github.com/jackh54/VoiceSentinel/releases/tag/v3.3.1"],"sources":[{"name":"CVE","id":"CVE-2026-61854","modified":"2026-10-30T18:25:28.484Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-61854"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","score":8.2}],"sourceAffected":[],"observedAt":"2026-10-30T18:59:27.127Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T04:10:31.776Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}