CVE-2026-71852

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{"bugzilla": {"description": "pypdf: pypdf: Denial of Service via crafted PDF with large CID font width ranges", "id": "2512615", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512615"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1050", "details": ["A flaw was found in pypdf. A remote attacker could provide a specially crafted PDF file that, when processed by the Font._collect_cid_character_widths function during text extraction, causes the library to expand unusually large font width ranges. This can lead to excessive memory consumption and long processing times, resulting in a denial of service."], "name": "CVE-2026-71852", "public_date": "2026-08-07T18:53:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71852\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71852\nhttps://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7\nhttps://github.com/py-pdf/pypdf/pull/3946\nhttps://github.com/py-pdf/pypdf/releases/tag/6.15.0\nhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.15.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pypdf", "source": "cna", "vendor": "py-pdf"}, "product": "pypdf", "vendor": "py-pdf"}], "created": "2026-08-07T20:45:03.242424+00:00", "updated": "2026-08-08T01:30:03.151720+00:00", "vendors": ["py-pdf", "py-pdf$PRODUCT$pypdf"]}