MediumFix available

DEBIAN-CVE-2026-41168

Type: advisorySource: OSV1 source record

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

Announced 22 Apr 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-41168

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-41168

pypdf

Source reference: /affected/0/package/name

Affected versions: 3.17.4-1
Source reference: /affected/0/versions
3.4.1-1
Source reference: /affected/0/versions
3.4.1-1+deb12u1
Source reference: /affected/0/versions
4.0.0-1
Source reference: /affected/0/versions
4.0.0-1~exp1
Source reference: /affected/0/versions
4.0.1-1
Source reference: /affected/0/versions
4.0.2-1
Source reference: /affected/0/versions
4.1.0-1
Source reference: /affected/0/versions
4.2.0-1
Source reference: /affected/0/versions
4.3.1-1
Source reference: /affected/0/versions
5.4.0-1
Source reference: /affected/0/versions
6.19.0-1
Source reference: /affected/0/versions
6.9.0-1
Source reference: /affected/0/versions
6.9.2-1
Source reference: /affected/0/versions
6.9.2-2
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

pypdf

Source reference: /affected/1/package/name

Affected versions: 5.4.0-1
Source reference: /affected/1/versions
6.19.0-1
Source reference: /affected/1/versions
6.9.0-1
Source reference: /affected/1/versions
6.9.2-1
Source reference: /affected/1/versions
6.9.2-2
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

pypdf

Source reference: /affected/2/package/name

Affected versions: 5.4.0-1
Source reference: /affected/2/versions
6.9.0-1
Source reference: /affected/2/versions
6.9.2-1
Source reference: /affected/2/versions
6.9.2-2
Source reference: /affected/2/versions
Fixed versions: 6.19.0-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

pypdf2

Source reference: /affected/3/package/name

Affected versions: 2.12.1-3
Source reference: /affected/3/versions
2.12.1-3+deb12u1
Source reference: /affected/3/versions
2.12.1-4
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "pypdf",
      "purl": "pkg:deb/debian/pypdf?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.17.4-1",
      "3.4.1-1",
      "3.4.1-1+deb12u1",
      "4.0.0-1",
      "4.0.0-1~exp1",
      "4.0.1-1",
      "4.0.2-1",
      "4.1.0-1",
      "4.2.0-1",
      "4.3.1-1",
      "5.4.0-1",
      "6.19.0-1",
      "6.9.0-1",
      "6.9.2-1",
      "6.9.2-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41168.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "pypdf",
      "purl": "pkg:deb/debian/pypdf?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "5.4.0-1",
      "6.19.0-1",
      "6.9.0-1",
      "6.9.2-1",
      "6.9.2-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41168.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.19.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "pypdf",
      "purl": "pkg:deb/debian/pypdf?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "5.4.0-1",
      "6.9.0-1",
      "6.9.2-1",
      "6.9.2-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41168.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "pypdf2",
      "purl": "pkg:deb/debian/pypdf2?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.12.1-3",
      "2.12.1-3+deb12u1",
      "2.12.1-4"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41168.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Related CVEs: CVE-2026-41168
Source reference: /upstream

Publisher severity

medium

Source reference: /severity/0/score

Event: #81903 · Revision 1
Added to Heist Feed: Mon, 26 Oct 2026 16:42:23 GMT
Publisher date: Wed, 22 Apr 2026 21:17:09 GMT

Read the original announcement