{"action":"Upgrade vllm to 0.26.0 or later.","affected":[{"fixed":"0.26.0","introduced":"0"}],"component":"vllm","cve_ids":["CVE-2026-73556"],"ecosystem":"PyPI","epss":0.00515,"exploited":false,"fixed_versions":["0.26.0"],"ghsa_id":"GHSA-48jh-3gj7-fg8v","id":"tcs_01M5KEXMHBYZRK2ZYNH1NZ8CM5","modified_at":"2026-09-10T12:25:34.716905199Z","published_at":"2026-09-04T21:37:00Z","references":["https://osv.dev/vulnerability/GHSA-48jh-3gj7-fg8v","https://github.com/vllm-project/vllm/security/advisories/GHSA-48jh-3gj7-fg8v","https://nvd.nist.gov/vuln/detail/CVE-2026-73556","https://github.com/vllm-project/vllm/pull/47595","https://github.com/vllm-project/vllm/commit/c9a788eedc412acceaa5112e0d44624b49841577","https://github.com/vllm-project/vllm","https://github.com/vllm-project/vllm/releases/tag/v0.26.0"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-48jh-3gj7-fg8v","url":"https://osv.dev/vulnerability/GHSA-48jh-3gj7-fg8v"}],"summary":"vLLM: ReDoS via structured_outputs.regex in the lm-format-enforcer backend (no compile timeout) — missed sibling of GHSA-rwxx-mrjm-wc2m"}