CVE-2026-96644

{
  "etk_id": "ETK-2026-2525",
  "cve_id": "CVE-2026-96644",
  "display_id": "CVE-2026-96644",
  "ghsa_id": "GHSA-9v9v-9qvf-h2hj",
  "euvd_id": "EUVD-2026-107563",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap out-of-bounds read in Pillow WMF/EMF rendering",
  "summary": "Pillow releases before 13.0.0 on Windows are affected when they render attacker-controlled WMF or EMF files. A malformed metafile can make the renderer access memory beyond its allocated buffer, potentially exposing process memory or causing a crash.",
  "mitigation": "Upgrade Pillow to version 13.0.0 or later on Windows. Until then, block or avoid rendering untrusted WMF and EMF files.",
  "vendor": "pip",
  "product": "Pillow",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 12.3.0"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "13.0.0"
      ],
      "package_name": "Pillow",
      "purl": "pkg:pypi/Pillow"
    }
  ],
  "cwes": null,
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/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": 15.8251242,
  "t0_at": "2026-10-21T20:54:43.537000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-10-17T10:34:42+00:00",
      "days": -4.430573344907407,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T20:54:43.537000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-9v9v-9qvf-h2hj"
    },
    "trigger_signal": {
      "at": "2026-10-17T10:34:42+00:00",
      "days": -4.430573344907407,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T20:54:43.537000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-9v9v-9qvf-h2hj"
    }
  }
}