nginx ignition has ParseAcceptLanguage `_` separator bypass that enables ~75x CPU amplification via Accept-Language header in i18nMiddleware in github.com/lucasdillmann/nginx-ignition

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0.0.0-20260126024607-cbaf0fc16ed8"
          },
          {
            "fixed": "0.0.0-20260526022344-0c988fc1277c"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/lucasdillmann/nginx-ignition",
      "purl": "pkg:golang/github.com/lucasdillmann/nginx-ignition",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6539.json"
    },
    "ecosystem_specific": {}
  }
]