{"id":"CVE-2026-102993","title":"pypdf is a free and open-source pure-python PDF library","summary":"pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an applicatio…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-770"],"vendor":"pypdf_project","product":"pypdf","affected":["pypdf < 6.17.0"],"patched":["pypdf 6.17.0"],"published":"2026-09-30","updated":"2026-10-02","sourceUpdated":"2026-10-02T17:17:01.203","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102993","references":[{"url":"https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/pull/4047","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.17.0","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102993.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102993"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2544269"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-102993"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102993"},{"url":"https://github.com/advisories/GHSA-qv6h-rv94-w285"},{"url":"https://github.com/py-pdf/pypdf"},{"url":"https://pypi.org/project/pypdf"}],"tags":["nvd","cve.org","csaf","vex","red-hat","ghsa","pip","osv","score-dispute"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-02T16:31:55.843886Z"},"scores":{"nvd":7.5,"cna":8.7,"vendor":6.5},"epss":0.00346,"epssPercentile":0.27981,"aliases":["GHSA-qv6h-rv94-w285","PYSEC-2026-4158"],"ecosystem":"pip","ingestedAt":"2026-09-30T20:23:19.514Z","slug":"CVE-2026-102993","body":"## Overview\n\npypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.\n\n## Affected\n\n- `pypdf < 6.17.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `pypdf 6.17.0`\n\n## Package advisory (CVE-2026-102993)\n\nAffected packages:\n\n- `pypdf < 6.17.0`\n\nPatched in:\n\n- `pypdf 6.17.0`\n\nSource: https://github.com/advisories/GHSA-qv6h-rv94-w285\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Ansible Automation Orchestrator 2026, Lightspeed Core, OpenShift Lightspeed, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI), … · no fix planned: Red Hat Ansible Automation Platform 2, Red Hat Quay 3, Ansible Automation Orchestrator 2026, Lightspeed Core, … · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102993.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":214981,"id":"CVE-2026-102993","ts":1790958216546,"field":"cvss","old":"8.7","new":"7.5"}]}