{"id":"CVE-2025-71379","aliases":["GHSA-j828-28rj-hfhp"],"url":"https://o3.security/vulnerability/CVE-2025-71379","summary":"vllm - Regular Expression Denial of Service in Multiple Components","details":"vLLM versions >= 0.6.3 and < 0.9.0 contain multiple regular expression denial of service (ReDoS) vulnerabilities. Several regex patterns — in vllm/lora/utils.py, the phi4mini tool parser, and the OpenAI-compatible serving chat endpoint — are susceptible to catastrophic backtracking. An attacker submitting crafted input with nested or repeated structures can trigger severe CPU consumption and performance degradation, resulting in denial of service.","published":"2026-06-20T18:27:09.485Z","modified":"2026-08-12T03:51:27.505522817Z","cvss":null,"epss":{"score":0.00481,"percentile":0.39976,"asOf":"2026-09-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"vllm","fixedVersion":"0.9.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71379.json"},{"type":"ADVISORY","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-j828-28rj-hfhp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-71379"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/vllm-regular-expression-denial-of-service-in-multiple-components"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.505522817Z"}}