CVE-2026-102556

{
  "etk_id": "ETK-2026-2",
  "cve_id": "CVE-2026-102556",
  "display_id": "CVE-2026-102556",
  "ghsa_id": "GHSA-q4x2-vf8m-46j5",
  "euvd_id": "EUVD-2026-89031",
  "status": "published",
  "anchor_state": "anchored",
  "title": "libsoup WebSocket Pong signal type confusion",
  "summary": "Red Hat Enterprise Linux 10 systems using libsoup or libsoup3 are affected by a type-confusion flaw in WebSocket Pong signal handling. A remote peer may cause memory corruption or terminate an application when that application has installed a Pong callback that consumes the documented GBytes value.",
  "mitigation": "Apply Red Hat updates for libsoup or libsoup3 when a corrected package is released. Until then, restrict WebSocket connections from untrusted peers to applications that register Pong callbacks using the GBytes interface.",
  "vendor": "Red Hat",
  "product": "Red Hat Enterprise Linux 10",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "libsoup3",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "libsoup",
      "purl": null
    }
  ],
  "cwes": [
    843
  ],
  "cvss_score": 8.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
  "epss_score": 0.0027,
  "epss_percentile": 0.1858,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 37.65381201666667,
  "t0_at": "2026-09-29T16:11:50.609000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-29T16:11:50.609000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T16:11:50.609000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-102556"
    }
  }
}