{"action":"Upgrade h3 to 1.15.5 or later.","affected":[{"fixed":"1.15.5","introduced":"0"}],"component":"h3","cve_ids":["CVE-2026-23527"],"ecosystem":"npm","epss":0.00626,"exploited":false,"fixed_versions":["1.15.5"],"ghsa_id":"GHSA-mp2g-9vg9-f4cg","id":"tcs_01M5KG15GER0VJZR1V5T4NQPWY","modified_at":"2026-04-13T17:15:15.108956Z","published_at":"2026-01-15T20:10:51Z","references":["https://osv.dev/vulnerability/GHSA-mp2g-9vg9-f4cg","https://github.com/h3js/h3/security/advisories/GHSA-mp2g-9vg9-f4cg","https://nvd.nist.gov/vuln/detail/CVE-2026-23527","https://github.com/h3js/h3/commit/618ccf4f37b8b6148bea7f36040471af45bfb097","https://github.com/h3js/h3","https://github.com/h3js/h3/releases/tag/v1.15.5","https://simonkoeck.com/writeups/h3-transfer-encoding-request-smuggling"],"severity":{"label":"high","score":8.9},"sources":[{"source":"osv","source_id":"GHSA-mp2g-9vg9-f4cg","url":"https://osv.dev/vulnerability/GHSA-mp2g-9vg9-f4cg"}],"summary":"h3 v1 has Request Smuggling (TE.TE) issue"}