CVE catalog

CVE-2026-112391

Pillow is a Python imaging library. From 5.1.0 until…

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow's PdfParser.get_value() can recurse without a limit while reading nested PDF objects. The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append. An attacker can provide a deeply nested PDF to an application that saves an image with PDF append enabled. This can raise an uncaught RecursionError or terminate the worker, causing denial of service. This issue is fixed in version 13.0.0.

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Oct 19, 2026, 8:40:36 PM UTC
Updated: Oct 19, 2026, 9:17:07 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.58% · Oct 27, 2026

Projects and upstream resources

[pillow][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "pillow",
      "status": "fixed",
      "release": "sid",
      "version": "13.0.0-1"
    },
    {
      "name": "pillow",
      "status": "vulnerable",
      "release": "forky",
      "version": "12.3.0-1"
    },
    {
      "name": "pillow",
      "status": "vulnerable",
      "release": "trixie",
      "version": "11.1.0-5+deb13u4"
    },
    {
      "name": "pillow",
      "status": "vulnerable",
      "release": "trixie-security",
      "version": "11.1.0-5+deb13u3"
    },
    {
      "name": "pillow",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "9.4.0-1.1+deb12u1"
    },
    {
      "name": "pillow",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "9.4.0-1.1+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "pillow",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "13.0.0-1"
    },
    {
      "bug": null,
      "name": "pillow",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "pillow",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "pillow",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "pillow",
      "ranges": [
        {
          "fixed": "13.0.0",
          "introduced": "5.1.0",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "13.0.0",
      "provider_record_id": "NVD-CVE-2026-112391"
    },
    {
      "name": "pillow",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "6.1.0-1",
        "6.1.0-1build1",
        "6.2.1-2",
        "7.0.0-4",
        "7.0.0-4build1",
        "7.0.0-4ubuntu0.1",
        "7.0.0-4ubuntu0.2",
        "7.0.0-4ubuntu0.3",
        "7.0.0-4ubuntu0.4",
        "7.0.0-4ubuntu0.5",
        "7.0.0-4ubuntu0.6",
        "7.0.0-4ubuntu0.7",
        "7.0.0-4ubuntu0.8",
        "7.0.0-4ubuntu0.9",
        "7.0.0-4ubuntu0.9+esm1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    },
    {
      "name": "pillow-python2",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "6.2.1-3~build1",
        "6.2.1-3",
        "6.2.1-3ubuntu0.1~esm1",
        "6.2.1-3ubuntu0.1~esm2"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    },
    {
      "name": "pillow",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "8.1.2+dfsg-0.3",
        "9.0.0-1",
        "9.0.1-1",
        "9.0.1-1build1",
        "9.0.1-1ubuntu0.1",
        "9.0.1-1ubuntu0.2",
        "9.0.1-1ubuntu0.3",
        "9.0.1-1ubuntu0.4",
        "9.0.1-1ubuntu0.5"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    },
    {
      "name": "pillow",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "24.04",
      "versions": [
        "10.0.0-1",
        "10.1.0-1",
        "10.2.0-1",
        "10.2.0-1build1",
        "10.2.0-1ubuntu1",
        "10.2.0-1ubuntu1.2",
        "10.2.0-1ubuntu1.3"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    },
    {
      "name": "pillow",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "26.10",
      "versions": [
        "12.1.1-2ubuntu1",
        "12.3.0-1ubuntu1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    },
    {
      "name": "pillow",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "26.04",
      "versions": [
        "11.3.0-1ubuntu1",
        "11.3.0-1ubuntu2",
        "12.0.0-1ubuntu1",
        "12.1.1-1ubuntu1",
        "12.1.1-2ubuntu1",
        "12.1.1-2ubuntu1.1",
        "12.1.1-2ubuntu1.2",
        "12.1.1-2ubuntu1.3"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-112391"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[python3-pil]Unknown
Source package: [pillow]
Details (4)
- 9.4.0-1.1+deb12u1 · amd64 · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · arm64 · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
[python3-pil.imagetk]Unknown
Source package: [pillow]
Details (4)
- 9.4.0-1.1+deb12u1 · amd64 · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · arm64 · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
[python-pil-doc]Unknown
Source package: [pillow]
Details (4)
- 9.4.0-1.1+deb12u1 · all · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · all · bookworm
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · all · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12
- 9.4.0-1.1+deb12u1 · all · bookworm-security
  Affected
  nvd · pillow · debian · bookworm; nvd · pillow · debian · 12

[Debian 13 (Trixie)]

[python3-pil]Unknown
Source package: [pillow]
Details (4)
- 11.1.0-5+deb13u4 · amd64 · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u4 · arm64 · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · amd64 · trixie-security
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · arm64 · trixie-security
  Affected
  nvd · pillow · debian · 13
[python3-pil.imagetk]Unknown
Source package: [pillow]
Details (4)
- 11.1.0-5+deb13u4 · amd64 · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u4 · arm64 · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · amd64 · trixie-security
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · arm64 · trixie-security
  Affected
  nvd · pillow · debian · 13
[python-pil-doc]Unknown
Source package: [pillow]
Details (4)
- 11.1.0-5+deb13u4 · all · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u4 · all · trixie
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · all · trixie-security
  Affected
  nvd · pillow · debian · 13
- 11.1.0-5+deb13u3 · all · trixie-security
  Affected
  nvd · pillow · debian · 13

Observed: Oct 27, 2026, 4:09:06 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]