CVE-2026-126191

{
  "etk_id": "ETK-2026-4346",
  "cve_id": "CVE-2026-126191",
  "display_id": "CVE-2026-126191",
  "ghsa_id": "GHSA-6655-6qjp-jx7x",
  "euvd_id": "EUVD-2026-124551",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Exponential regex denial of service in soupsieve",
  "summary": "Soup Sieve versions before 3.0 can consume excessive processing time while compiling certain CSS selectors. An attacker may stall a worker if the application accepts and compiles untrusted selector strings, including through Soup Sieve or Beautiful Soup selection interfaces.",
  "mitigation": "Upgrade soupsieve to version 3.0 or later. Until upgraded, do not compile user-supplied selectors and enforce application-level input restrictions before selector compilation.",
  "vendor": "pypi",
  "product": "soupsieve",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.9.2"
      ],
      "ecosystem": "pypi",
      "fixed_versions": [
        "3.0"
      ],
      "package_name": "soupsieve",
      "purl": "pkg:pypi/soupsieve"
    }
  ],
  "cwes": [
    1333
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 8.607538433333334,
  "t0_at": "2026-11-12T16:57:01.566000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-12T16:57:01.566000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-12T16:57:01.566000+00:00",
      "url": "https://github.com/facelessuser/soupsieve/security/advisories/GHSA-6655-6qjp-jx7x"
    }
  }
}