data/osv/GO-2026-4509.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-4509",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-27017",
    "GHSA-7m29-f4hw-g2vx"
  ],
  "summary": "Fingerprint vulnerability in uTLS from GREASE ECH mismatch for Chrome parrots in github.com/refraction-networking/utls",
  "details": "Fingerprint vulnerability in uTLS from GREASE ECH mismatch for Chrome parrots in github.com/refraction-networking/utls",
  "affected": [
    {
      "package": {
        "name": "github.com/refraction-networking/utls",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "1.6.0"
            },
            {
              "fixed": "1.8.1"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/refraction-networking/utls",
            "symbols": [
              "BoringGREASEECH",
              "Roller.Dial",
              "UConn.BuildHandshakeState",
              "UConn.BuildHandshakeStateWithoutSession",
              "UConn.Handshake",
              "UConn.HandshakeContext",
              "UConn.Read",
              "UConn.Write",
              "UQUICConn.HandleData",
              "UQUICConn.Start",
              "UTLSIdToSpec"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/refraction-networking/utls/security/advisories/GHSA-7m29-f4hw-g2vx"
    },
    {
      "type": "FIX",
      "url": "https://github.com/refraction-networking/utls/commit/24bd1e05a788c1add7f3037f4532ea552b2cee07"
    },
    {
      "type": "WEB",
      "url": "https://github.com/refraction-networking/utls/releases/tag/v1.8.1"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-4509",
    "review_status": "REVIEWED"
  }
}