pypdf — security advisory

{
  "id": "b6e0fae8c61c107b09c2899b4536e31f7cfad6dc2ac64761103abec9f3b60e9e",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-102996",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-102996",
    "summary": "pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.",
    "evidence": "osv:DEBIAN-CVE-2026-102996",
    "products": [
      {
        "name": {
          "value": "pypdf",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "5.4.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.19.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.9.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.9.2-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.9.2-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "pypdf",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.19.0-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "5.4.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "6.9.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "6.9.2-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "6.9.2-2",
            "evidence": "/affected/1/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-102996",
      "aliases": [
        "DEBIAN-CVE-2026-102996"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "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-2026-102996.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-2026-102996.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-10T19:00:40.522574787Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-102996"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-102996"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-102996",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 275451,
  "published_at": "2026-09-30T21:17:06.863+00:00"
}