{"action":"Upgrade github.com/refraction-networking/utls to 1.8.1 or later.","affected":[{"fixed":"1.8.1","introduced":"1.6.0"}],"component":"github.com/refraction-networking/utls","cve_ids":["CVE-2026-27017"],"ecosystem":"Go","epss":0.00175,"exploited":false,"fixed_versions":["1.8.1"],"ghsa_id":"GHSA-7m29-f4hw-g2vx","id":"tcs_01M5KF29YDY3T9692MQ1VA68SF","modified_at":"2026-09-10T03:50:34.315551939Z","published_at":"2026-02-18T22:33:18Z","references":["https://osv.dev/vulnerability/GHSA-7m29-f4hw-g2vx","https://github.com/refraction-networking/utls/security/advisories/GHSA-7m29-f4hw-g2vx","https://nvd.nist.gov/vuln/detail/CVE-2026-27017","https://github.com/refraction-networking/utls/commit/24bd1e05a788c1add7f3037f4532ea552b2cee07","https://github.com/refraction-networking/utls","https://github.com/refraction-networking/utls/releases/tag/v1.8.1","https://pkg.go.dev/vuln/GO-2026-4509"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-7m29-f4hw-g2vx","url":"https://osv.dev/vulnerability/GHSA-7m29-f4hw-g2vx"},{"source":"nvd","source_id":"CVE-2026-27017","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27017"}],"summary":"uTLS has a fingerprint vulnerability from GREASE ECH mismatch for Chrome parrots"}