{
  "variant_id": "CVE-2026-34441-HEAD-VARIANT",
  "created_at": "2026-04-03T15:45:00Z",
  "variant_summary": "HTTP Request Smuggling via HEAD request body (variant of GET request smuggling). HEAD requests to static file mount points with Content-Length header leave body unconsumed, enabling request smuggling on keep-alive connections.",
  "relation": "newer_version_sibling",
  "origin_kind": "pruva_variant",
  "repository": "https://github.com/yhirose/cpp-httplib",
  "submitted_target": {
    "target_kind": "git_tag",
    "version": "v0.38.0",
    "display": "v0.38.0"
  },
  "variant_target": {
    "target_kind": "git_tag",
    "commit_sha": "6f2717e97f5e5dbd35178c0f2d9d6c9496a0d90c",
    "version": "v0.38.0",
    "display": "v0.38.0"
  },
  "same_root_cause_confidence": "high",
  "same_surface_confidence": "high",
  "claimed_surface": "library_api",
  "validated_surface": "library_api",
  "required_entrypoint_kind": "http_server_endpoint",
  "required_entrypoint_detail": "Static file mount points (HEAD method to /path)",
  "attacker_controlled_input": "HTTP HEAD request with Content-Length header and body containing smuggled second request",
  "trigger_path": "Server::routing() -> handle_file_request() early return for HEAD without body consumption",
  "observed_impact_class": "http_request_smuggling",
  "exploitability_confidence": "high",
  "evidence_scope": "realistic_harness",
  "runtime_manifest_present": true,
  "end_to_end_target_reached": true,
  "inferred": false,
  "file_path": "httplib.h",
  "line_start": 11629,
  "line_end": 11631,
  "secondary_anchors": [
    {
      "file_path": "httplib.h",
      "line_start": 8543,
      "line_end": 8550
    }
  ],
  "review_scope_paths": [
    "httplib.h"
  ],
  "artifact_refs": {
    "variant_manifest": "vuln_variant/variant_manifest.json",
    "validation_verdict": "vuln_variant/validation_verdict.json",
    "runtime_manifest": "logs/vuln_variant/final_variant_results.json",
    "repro_log": "logs/vuln_variant/test_run.log",
    "reproducer": [
      "vuln_variant/reproduction_steps.sh"
    ]
  }
}