ubuntu-cve-2026-48735
Vulnerability from osv_ubuntu
Published
2026-05-28 16:16
Modified
2026-06-03 11:26
Summary
Details

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-pypdf2",
            "binary_version": "1.25.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "python3-pypdf2",
            "binary_version": "1.25.1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pypdf2",
        "purl": "pkg:deb/ubuntu/pypdf2@1.25.1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.23+git20141008-1",
        "1.25.1-1",
        "1.25.1-1ubuntu0.1~esm1",
        "1.25.1-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-pypdf2",
            "binary_version": "1.26.0-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "python3-pypdf2",
            "binary_version": "1.26.0-2ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "pypdf2",
        "purl": "pkg:deb/ubuntu/pypdf2@1.26.0-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.26.0-2",
        "1.26.0-2ubuntu0.1~esm1",
        "1.26.0-2ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-pypdf2",
            "binary_version": "1.26.0-3ubuntu1.20.04.2"
          },
          {
            "binary_name": "python3-pypdf2",
            "binary_version": "1.26.0-3ubuntu1.20.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "pypdf2",
        "purl": "pkg:deb/ubuntu/pypdf2@1.26.0-3ubuntu1.20.04.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.26.0-2",
        "1.26.0-3ubuntu1",
        "1.26.0-3ubuntu1.20.04.1",
        "1.26.0-3ubuntu1.20.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-pypdf2",
            "binary_version": "1.26.0-4ubuntu0.22.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "pypdf2",
        "purl": "pkg:deb/ubuntu/pypdf2@1.26.0-4ubuntu0.22.04.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.26.0-4",
        "1.26.0-4ubuntu0.22.04.1",
        "1.26.0-4ubuntu0.22.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-pypdf",
            "binary_version": "4.0.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pypdf",
        "purl": "pkg:deb/ubuntu/pypdf@4.0.2-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.1-1",
        "3.17.4-1",
        "4.0.0-1",
        "4.0.1-1",
        "4.0.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-pypdf2",
            "binary_version": "2.12.1-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pypdf2",
        "purl": "pkg:deb/ubuntu/pypdf2@2.12.1-4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.12.1-3",
        "2.12.1-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-pypdf",
            "binary_version": "5.4.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "pypdf",
        "purl": "pkg:deb/ubuntu/pypdf@5.4.0-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.1-1",
        "5.4.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-pypdf",
            "binary_version": "6.9.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "pypdf",
        "purl": "pkg:deb/ubuntu/pypdf@6.9.2-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1",
        "6.9.2-1"
      ]
    }
  ],
  "aliases": [],
  "details": "pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.",
  "id": "UBUNTU-CVE-2026-48735",
  "modified": "2026-06-03T11:26:16Z",
  "published": "2026-05-28T16:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48735"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-48735"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/py-pdf/pypdf/pull/3796"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/py-pdf/pypdf/releases/tag/6.12.1"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-48735"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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