{"cve":"CVE-2026-62384","nvd":{"published":"2026-08-22T15:16:18.700","modified":"2026-10-14T13:10:00.187","status":"Analyzed","description":"NLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that allows attackers to read arbitrary XML files outside the corpus root. Attackers can place symlinks with names containing no path separators inside the corpus subdirectory, which pass the path validation guard and are resolved to files outside the intended corpus root when accessed via frame_by_name(), _lu_file(), or doc() methods.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-22"],"references":["https://github.com/nltk/nltk/security/advisories/GHSA-f833-7jw8-xwrv","https://www.vulncheck.com/advisories/nltk-framenetcorpusreader-symlink-sandbox-bypass-before","https://github.com/nltk/nltk/security/advisories/GHSA-f833-7jw8-xwrv"],"products":["nltk:nltk"],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-62384","score":0.00651,"percentile":0.5092,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-f833-7jw8-xwrv","url":"https://osv.dev/vulnerability/GHSA-f833-7jw8-xwrv","summary":"NLTK: Symlink-based sandbox bypass in FramenetCorpusReader (bypasses the fix for CVE-2026-54292)","modified":"2026-09-08T16:45:03.613881599Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":[">=3.10.0 <3.10.2"],"fixed":["3.10.2"]}]},{"id":"PYSEC-2026-3789","url":"https://osv.dev/vulnerability/PYSEC-2026-3789","summary":"","modified":"2026-09-03T11:00:04.971435908Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":[">=3.10.0 <3.10.2"],"fixed":["3.10.2"]}]}],"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."]}