{"action":"Upgrade vllm to 0.19.0 or later.","affected":[{"fixed":"0.19.0","introduced":"0.1.0"}],"component":"vllm","cve_ids":["CVE-2026-34756"],"ecosystem":"PyPI","epss":0.00421,"exploited":false,"fixed_versions":["0.19.0"],"ghsa_id":"GHSA-3mwp-wvh9-7528","id":"tcs_01M5KEW58EYA1C230G0AJ1MAKG","modified_at":"2026-09-10T03:50:42.430496411Z","published_at":"2026-04-03T15:35:48Z","references":["https://osv.dev/vulnerability/GHSA-3mwp-wvh9-7528","https://github.com/vllm-project/vllm/security/advisories/GHSA-3mwp-wvh9-7528","https://nvd.nist.gov/vuln/detail/CVE-2026-34756","https://github.com/vllm-project/vllm/pull/37952","https://github.com/vllm-project/vllm/commit/b111f8a61f100fdca08706f41f29ef3548de7380","https://access.redhat.com/errata/RHSA-2026:36005","https://access.redhat.com/errata/RHSA-2026:36006","https://access.redhat.com/security/cve/CVE-2026-34756","https://bugzilla.redhat.com/show_bug.cgi?id=2455425","https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2298.yaml","https://github.com/vllm-project/vllm","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34756.json"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-3mwp-wvh9-7528","url":"https://osv.dev/vulnerability/GHSA-3mwp-wvh9-7528"}],"summary":"vLLM: Unauthenticated OOM Denial of Service via Unbounded `n` Parameter in OpenAI API Server"}