CVE-2026-112397

{
  "etk_id": "ETK-2026-2097",
  "cve_id": "CVE-2026-112397",
  "display_id": "CVE-2026-112397",
  "ghsa_id": "GHSA-58r4-6rv3-gfh8",
  "euvd_id": "EUVD-2026-104640",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Out-of-bounds write in Pillow morphology processing",
  "summary": "Pillow versions before 13.0.0 can access memory outside a row buffer when morphology functions process a zero-width PPM or PGM image. An attacker may crash the application and potentially cause memory corruption if they can supply an image that the application passes to a morphology operation.",
  "mitigation": "Upgrade Pillow to version 13.0.0 or later. Until upgraded, reject zero-width PPM and PGM images and avoid applying morphology operations to untrusted images.",
  "vendor": "python-pillow",
  "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": [
    787
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0044,
  "epss_percentile": 0.366,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 9.404652083333334,
  "t0_at": "2026-10-19T21:17:35.684000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-20T21:30:23.707350+00:00",
      "days": 1.0088891591435185,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:17:35.684000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-17T10:38:24+00:00",
      "days": -2.4438852314814814,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:17:35.684000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8"
    },
    "trigger_signal": {
      "at": "2026-10-19T21:17:35.684000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:17:35.684000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-112397"
    }
  }
}