{"cve":"CVE-2026-79674","nvd":{"published":"2026-08-25T16:17:27.873","modified":"2026-08-31T19:06:01.313","status":"Analyzed","description":"NLTK versions before 3.10.3 contain a path sandbox bypass vulnerability in corpus-reader constructors that allows attackers to read files outside the intended data root. Attackers can supply arbitrary corpus root paths to LinThesaurusCorpusReader and PanLexLiteCorpusReader constructors to access filesystem content and SQLite databases outside the pathsec sandbox boundary.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":8.8},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-73"],"references":["https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49","https://www.vulncheck.com/advisories/nltk-path-traversal-via-corpus-reader-constructors","https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49"],"products":["nltk:nltk"],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-79674","score":0.00387,"percentile":0.32832,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3gq4-3j92-5w49","url":"https://osv.dev/vulnerability/GHSA-3gq4-3j92-5w49","summary":"NLTK: Corpus Reader Sandbox Bypass","modified":"2026-09-08T17:15:03.431037417Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.10.3"],"fixed":["3.10.3"]}]},{"id":"PYSEC-2026-3736","url":"https://osv.dev/vulnerability/PYSEC-2026-3736","summary":"","modified":"2026-09-01T09:15:02.848578247Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.10.3"],"fixed":["3.10.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}