CVE-2026-112897

{
  "etk_id": "ETK-2026-1962",
  "cve_id": "CVE-2026-112897",
  "display_id": "CVE-2026-112897",
  "ghsa_id": "GHSA-q45j-58j2-45rg",
  "euvd_id": "EUVD-2026-104659",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Uninitialized memory disclosure in Pillow TIFF decoding",
  "summary": "Pillow before 13.0.0 may return stale heap memory as pixel data when decoding malformed JPEG-compressed or Group 4 TIFF images. An attacker who can submit such an image to an application may obtain process-memory data if the application exposes a preview, conversion, thumbnail, OCR result, or other pixel-derived output.",
  "mitigation": "Upgrade Pillow to version 13.0.0 or later. Until upgraded, do not process untrusted TIFF files or prevent pixel-derived results from being returned to untrusted users.",
  "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": [
    908
  ],
  "cvss_score": 8.7,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": 0.0029,
  "epss_percentile": 0.2042,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 17.215538866666666,
  "t0_at": "2026-10-19T22:00:52.749000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-19T22:55:52.224519+00:00",
      "days": 0.0381883740625,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T22:00:52.749000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-17T10:37:25+00:00",
      "days": -2.474626724537037,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T22:00:52.749000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-q45j-58j2-45rg"
    }
  }
}