{"schema":"threatline.record/2","record":{"id":"CVE-2026-100647","aliases":["GHSA-wpww-v874-ph2p"],"summary":"vLLM before 0.29.0 CPU Exhaustion via unbounded cache_salt","details":"vLLM versions before 0.29.0 contain a denial-of-service vulnerability in the cache_salt parameter accepted on OpenAI-compatible and Anthropic API endpoints, which lacks maximum length validation and is processed on the single EngineCore scheduler thread. Unauthenticated attackers can send HTTP requests with multi-hundred-megabyte salt values that trigger expensive pickle serialization and SHA-256 hashing, stalling the scheduler thread and denying service to all concurrent requests.","categories":["Unclassified"],"product":"vllm","vendor":"vllm-project","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100647","source_modified_at":"2026-09-28T18:28:14.772Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"vllm","vendor":"vllm-project","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"0.29.0"},{"version":"0.29.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100647","source_modified_at":"2026-09-28T18:28:14.772Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vllm","ecosystem":null},"version":"0.29.0","basis":"first unaffected version stated in the CVE record"}],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00348,"percentile":0.27237,"score_date":"2026-10-23"},"published_at":"2026-09-26T13:23:18.240Z","modified_at":"2026-09-28T18:28:14.772Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100647","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T18:28:14.772Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100647","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-wpww-v874-ph2p","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/vllm-before-0.29.0-cpu-exhaustion-via-unbounded-cache-salt","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-28T18:26:37.598538Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-28T18:28:14.772Z","content_hash":"c2b16c39b956b77fe699931d072bfdff869d96aa5557ae58e1c05a1c9f46660b"}}