{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71852", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-07T18:26:53.523Z", "datePublished": "2026-08-07T18:53:46.083Z", "dateUpdated": "2026-08-07T18:53:46.083Z"}, "containers": {"cna": {"title": "pypdf: Possible long runtimes/large memory usage for large CID font width ranges", "problemTypes": [{"descriptions": [{"cweId": "CWE-834", "lang": "en", "description": "CWE-834: Excessive Iteration", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "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", "version": "4.0"}}], "references": [{"name": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42"}, {"name": "https://github.com/py-pdf/pypdf/pull/3946", "tags": ["x_refsource_MISC"], "url": "https://github.com/py-pdf/pypdf/pull/3946"}, {"name": "https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7", "tags": ["x_refsource_MISC"], "url": "https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7"}, {"name": "https://github.com/py-pdf/pypdf/releases/tag/6.15.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/py-pdf/pypdf/releases/tag/6.15.0"}], "affected": [{"vendor": "py-pdf", "product": "pypdf", "versions": [{"version": "< 6.15.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-07T18:53:46.083Z"}, "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."}], "source": {"advisory": "GHSA-fwg2-594c-jp42", "discovery": "UNKNOWN"}}}}

{}

{}

{"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"]}