CVE-2026-96643

{
  "etk_id": "ETK-2026-2506",
  "cve_id": "CVE-2026-96643",
  "display_id": "CVE-2026-96643",
  "ghsa_id": "GHSA-g4qv-2jxx-769h",
  "euvd_id": "EUVD-2026-107564",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Quadratic CPU denial of service in Pillow EXIF parsing",
  "summary": "Pillow versions 11.0.0 through 12.x can consume excessive CPU while parsing EXIF metadata in a PNG image. An attacker who can submit a specially formed PNG for metadata or orientation processing can delay image-handling requests.",
  "mitigation": "Upgrade Pillow to version 13.0.0 or later. Until upgraded, restrict untrusted PNG uploads from reaching EXIF and orientation-processing paths.",
  "vendor": "pip",
  "product": "Pillow",
  "affected": [
    {
      "affected_notes": [
        "11.0.0 - 12.3.0"
      ],
      "affected_ranges": [],
      "ecosystem": "pip",
      "fixed_versions": [
        "13.0.0"
      ],
      "package_name": "Pillow",
      "purl": "pkg:pypi/Pillow"
    }
  ],
  "cwes": [
    407
  ],
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 10.3100316,
  "t0_at": "2026-10-21T20:56:26.344000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T21:30:01.157463+00:00",
      "days": 1.0233196002662037,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T20:56:26.344000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-17T10:35:16+00:00",
      "days": -4.431369722222223,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T20:56:26.344000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-g4qv-2jxx-769h"
    }
  }
}