CVE-2026-112895

{
  "etk_id": "ETK-2026-2497",
  "cve_id": "CVE-2026-112895",
  "display_id": "CVE-2026-112895",
  "ghsa_id": "GHSA-p4wg-p73j-c528",
  "euvd_id": "EUVD-2026-104657",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unbounded recursion in Pillow PDF append parsing",
  "summary": "Pillow versions 5.1.0 through 12.x can exhaust stack, CPU, or memory while parsing an existing PDF during a PDF append operation. An attacker can cause denial of service by supplying a malformed PDF to an application that uses `Image.save` with PDF append enabled.",
  "mitigation": "Upgrade Pillow to version 13.0.0 or later. Until upgraded, do not append to untrusted existing PDFs and isolate or resource-limit PDF-processing workloads.",
  "vendor": "pip",
  "product": "Pillow",
  "affected": [
    {
      "affected_notes": [
        "5.1.0 - 12.3.0"
      ],
      "affected_ranges": [],
      "ecosystem": "pip",
      "fixed_versions": [
        "13.0.0"
      ],
      "package_name": "pillow",
      "purl": "pkg:pypi/pillow"
    }
  ],
  "cwes": null,
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 7.137525416666667,
  "t0_at": "2026-10-19T21:57:14.207000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T20:54:10.776981+00:00",
      "days": 2.9562103007060183,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:57:14.207000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-17T10:36:08+00:00",
      "days": -2.4729885069444446,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:57:14.207000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-p4wg-p73j-c528"
    },
    "trigger_signal": {
      "at": "2026-10-17T10:36:08+00:00",
      "days": -2.4729885069444446,
      "is_lower_bound": false,
      "measured_at": "2026-10-19T21:57:14.207000+00:00",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-p4wg-p73j-c528"
    }
  }
}