{"id":"CVE-2026-126296","summary":"NLTK before 3.10.4 Path Traversal via save_maxent_params and load_maxent_params","details":"NLTK before 3.10.4 contains a path traversal vulnerability in save_maxent_params() and load_maxent_params() that bypasses the pathsec filesystem restriction mechanism. Attackers who control the tab_dir argument can read or overwrite model parameter files outside permitted data roots, because the functions call Python's built-in open() directly.","aliases":["GHSA-59f9-gqg8-mqpj"],"modified":"2026-11-15T02:46:04.824984878Z","published":"2026-11-13T09:36:28.517Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-73"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126296.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126296.json"},{"type":"ADVISORY","url":"https://github.com/nltk/nltk/security/advisories/GHSA-59f9-gqg8-mqpj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126296"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/nltk-before-3.10.4-path-traversal-via-save-maxent-params-and-load-maxent-params"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nltk/nltk","events":[{"introduced":"0"},{"fixed":"5c41fc04a45e95577a83f3914acda211a994be00"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"3.10.4"}],"source":"AFFECTED_FIELD"},{"source":"DESCRIPTION","range":[{"introduced":"0"},{"fixed":"3.10.4"}]}]}}],"versions":["v3.10.4-rc1","v3.10.3-rc1","v3.10.3","v3.10.2-rc1","v3.10.2","v3.10.1","v.3.10.1","v3.10.1-rc2","v3.10.0-rc2","v3.10.0","v3.10.1-rc1","v3.10.0-rc1","3.9.4","3.9.3","v3.9.2","3.9.2","3.9.1","3.9","3.8.2","3.8.1","3.8","3.7","3.6.7","3.6.6","3.6.5","3.6.2","3.6.1","3.6","3.5","3.5b1","3.4.4","3.4.3","3.4.1","3.4","3.3","3.2.5","3.2.4","3.2.3","3.2.2","3.2.1","3.2","3.1","3.0.5","3.0.4","3.0.3","3.0.2","3.0.0b1","3.0a4","2.0.1rc4","2.0.1rc3","2.0.1rc2","2.0.1rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126296.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}]}