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{"affected": [{"affectedData": [{"product": "pypdf", "vendor": "py-pdf", "versions": [{"status": "affected", "version": "< 6.15.0"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0."}], "id": "CVE-2026-71852", "lastModified": "2026-08-10T13:20:38.740", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71852", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-10T12:03:37.229178Z", "version": "2.0.3"}}]}, "published": "2026-08-07T19:18:54.547", "references": [{"source": "[email protected]", "url": "https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7"}, {"source": "[email protected]", "url": "https://github.com/py-pdf/pypdf/pull/3946"}, {"source": "[email protected]", "url": "https://github.com/py-pdf/pypdf/releases/tag/6.15.0"}, {"source": "[email protected]", "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-834"}], "source": "[email protected]", "type": "Secondary"}]}

{"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"]}