{"action":"Upgrade undici to 6.27.0 or later.","affected":[{"fixed":"6.27.0","introduced":"0"},{"fixed":"7.28.0","introduced":"7.0.0"},{"fixed":"8.5.0","introduced":"8.0.0"}],"component":"undici","cve_ids":["CVE-2026-12151"],"ecosystem":"npm","epss":0.00789,"exploited":false,"fixed_versions":["6.27.0","7.28.0","8.5.0"],"ghsa_id":"GHSA-vxpw-j846-p89q","id":"tcs_01M5KGD9TH3RGRNQFGYVZ2M1DN","modified_at":"2026-09-10T03:50:12.291121037Z","published_at":"2026-06-19T14:22:01Z","references":["https://osv.dev/vulnerability/GHSA-vxpw-j846-p89q","https://github.com/nodejs/undici/security/advisories/GHSA-vxpw-j846-p89q","https://nvd.nist.gov/vuln/detail/CVE-2026-12151","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-vxpw-j846-p89q","url":"https://osv.dev/vulnerability/GHSA-vxpw-j846-p89q"}],"summary":"undici WebSocket client vulnerable to denial of service via fragment count bypass"}