{"action":"Upgrade undici to 6.28.1 or later.","affected":[{"fixed":"6.28.1","introduced":"6.7.0"},{"fixed":"7.29.1","introduced":"7.0.0"},{"fixed":"8.10.2","introduced":"8.0.0"}],"component":"undici","cve_ids":["CVE-2026-19534"],"ecosystem":"npm","epss":0.00394,"exploited":false,"fixed_versions":["6.28.1","7.29.1","8.10.2"],"ghsa_id":"GHSA-rfgv-xxqx-mfg5","id":"tcs_01M5KG8Y3ZG7MTBT1SRZ7M0CT1","modified_at":"2026-09-29T18:30:41.167602268Z","published_at":"2026-09-29T18:21:33Z","references":["https://osv.dev/vulnerability/GHSA-rfgv-xxqx-mfg5","https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5","https://nvd.nist.gov/vuln/detail/CVE-2026-19534","https://github.com/nodejs/undici/commit/2af0faf88b906d3127a360c3ac75164c0f95e5a5","https://github.com/nodejs/undici/commit/6615e0175e9b635bcd2e3e87a47daa82f6f5b728","https://github.com/nodejs/undici/commit/66e12816064cf3068f63bd134748b7fc4e779bad","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici","https://github.com/nodejs/undici/releases/tag/v6.28.1","https://github.com/nodejs/undici/releases/tag/v7.29.1","https://github.com/nodejs/undici/releases/tag/v8.10.2"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-rfgv-xxqx-mfg5","url":"https://osv.dev/vulnerability/GHSA-rfgv-xxqx-mfg5"}],"summary":"undici vulnerable to Denial of Service via unrequested WebSocket subprotocol"}