CVE-2026-116589

{
  "etk_id": "ETK-2026-2701",
  "cve_id": "CVE-2026-116589",
  "display_id": "CVE-2026-116589",
  "ghsa_id": "GHSA-p3m5-h5v9-vqj6",
  "euvd_id": "EUVD-2026-110470",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unhandled-error denial of service in dd-trace-py IAST",
  "summary": "dd-trace-py versions 3.13.0 through 4.15.4 can allow IAST string instrumentation to terminate the Python process when legacy percent-style formatting handles untrusted input. An attacker can interrupt affected application work only where IAST is enabled and the application applies that formatting operation to attacker-controlled data.",
  "mitigation": "Upgrade dd-trace-py to version 4.15.5 or later. Disable IAST where it is not needed until the upgrade is complete.",
  "vendor": "DataDog",
  "product": "dd-trace-py",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "3.13.0 < 4.15.5"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        ">= 4.15.5"
      ],
      "package_name": "ddtrace",
      "purl": "pkg:pypi/ddtrace"
    }
  ],
  "cwes": [
    248
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 28.98600203333333,
  "t0_at": "2026-10-26T21:26:58.832000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-26T21:26:58.832000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-26T21:26:58.832000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116589"
    }
  }
}