{"schema_version":1,"title":"Nltk vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 6 vulnerabilities in Nltk: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-12372, was published on 9 August 2026.","url":"https://junglewise.ai/threats/technologies/nltk-nltk","json_url":"https://junglewise.ai/threats/technologies/nltk-nltk.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/nltk-nltk","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":false,"counts":{"high":3,"all_time":6,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":5},"latest":[{"cve":"CVE-2026-12372","cvss":3.7,"epss":0.0026,"slug":"cve-2026-12372-pysec-2026-3955-a-server-side-request-forgery-ssrf-vulnerability","title":"NLTK network URL validation permits SSRF to RFC 6598 shared-address-space hosts","severity":"low","exploited":false,"published_at":"2026-08-09T23:16:35.793+00:00","url":"https://junglewise.ai/threats/cve-2026-12372-pysec-2026-3955-a-server-side-request-forgery-ssrf-vulnerability"},{"cve":"CVE-2026-12259","cvss":6.5,"epss":0.001,"slug":"cve-2026-12259-nltk-missing-post-download-integrity-verification","title":"NLTK missing post-download integrity verification","severity":"medium","exploited":false,"published_at":"2026-08-03T08:17:17.88+00:00","url":"https://junglewise.ai/threats/cve-2026-12259-nltk-missing-post-download-integrity-verification"},{"cve":"CVE-2026-12252","cvss":7.8,"epss":0.0024,"slug":"cve-2026-12252-nltk-arbitrary-code-execution-in-stanford-interface-classes","title":"NLTK arbitrary code execution in Stanford interface classes","severity":"high","exploited":false,"published_at":"2026-07-04T02:16:23.603+00:00","url":"https://junglewise.ai/threats/cve-2026-12252-nltk-arbitrary-code-execution-in-stanford-interface-classes"},{"cve":"CVE-2026-33236","cvss":8.1,"epss":0.006,"slug":"cve-2026-33236-nltk-path-traversal-in-downloader-component","title":"NLTK path traversal in downloader component","severity":"high","exploited":false,"published_at":"2026-03-20T23:16:47.007+00:00","url":"https://junglewise.ai/threats/cve-2026-33236-nltk-path-traversal-in-downloader-component"},{"cve":"CVE-2026-0846","cvss":8.6,"epss":0.0053,"slug":"cve-2026-0846-nltk-arbitrary-file-read-in-nltk-util-filestring","title":"NLTK arbitrary file read in nltk.util.filestring","severity":"high","exploited":false,"published_at":"2026-03-09T20:16:05.703+00:00","url":"https://junglewise.ai/threats/cve-2026-0846-nltk-arbitrary-file-read-in-nltk-util-filestring"},{"cve":"CVE-2021-3828","cvss":3.1,"epss":0.017,"slug":"cve-2021-3828-nltk-redos-in-comparative-sentence-parsing","title":"PYSEC-2021-356 - nltk is vulnerable to Inefficient Regular Expression Complexity","severity":"low","exploited":false,"published_at":"2021-09-27T13:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-3828-nltk-redos-in-comparative-sentence-parsing"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Nltk","slug":"nltk-nltk","vendor":{"hub":true,"name":"Nltk","slug":"nltk","url":"https://junglewise.ai/threats/vendors/nltk"},"aliases":[],"category":"library","repo_url":"https://github.com/nltk/nltk","description":"Python library for natural language processing tasks including tokenization, stemming, and parsing.","url":"https://junglewise.ai/threats/technologies/nltk-nltk"},"most_severe":[{"cve":"CVE-2026-0846","cvss":8.6,"epss":0.0053,"slug":"cve-2026-0846-nltk-arbitrary-file-read-in-nltk-util-filestring","title":"NLTK arbitrary file read in nltk.util.filestring","severity":"high","exploited":false,"published_at":"2026-03-09T20:16:05.703+00:00","url":"https://junglewise.ai/threats/cve-2026-0846-nltk-arbitrary-file-read-in-nltk-util-filestring"},{"cve":"CVE-2026-33236","cvss":8.1,"epss":0.006,"slug":"cve-2026-33236-nltk-path-traversal-in-downloader-component","title":"NLTK path traversal in downloader component","severity":"high","exploited":false,"published_at":"2026-03-20T23:16:47.007+00:00","url":"https://junglewise.ai/threats/cve-2026-33236-nltk-path-traversal-in-downloader-component"},{"cve":"CVE-2026-12252","cvss":7.8,"epss":0.0024,"slug":"cve-2026-12252-nltk-arbitrary-code-execution-in-stanford-interface-classes","title":"NLTK arbitrary code execution in Stanford interface classes","severity":"high","exploited":false,"published_at":"2026-07-04T02:16:23.603+00:00","url":"https://junglewise.ai/threats/cve-2026-12252-nltk-arbitrary-code-execution-in-stanford-interface-classes"},{"cve":"CVE-2026-12259","cvss":6.5,"epss":0.001,"slug":"cve-2026-12259-nltk-missing-post-download-integrity-verification","title":"NLTK missing post-download integrity verification","severity":"medium","exploited":false,"published_at":"2026-08-03T08:17:17.88+00:00","url":"https://junglewise.ai/threats/cve-2026-12259-nltk-missing-post-download-integrity-verification"},{"cve":"CVE-2026-12372","cvss":3.7,"epss":0.0026,"slug":"cve-2026-12372-pysec-2026-3955-a-server-side-request-forgery-ssrf-vulnerability","title":"NLTK network URL validation permits SSRF to RFC 6598 shared-address-space hosts","severity":"low","exploited":false,"published_at":"2026-08-09T23:16:35.793+00:00","url":"https://junglewise.ai/threats/cve-2026-12372-pysec-2026-3955-a-server-side-request-forgery-ssrf-vulnerability"},{"cve":"CVE-2021-3828","cvss":3.1,"epss":0.017,"slug":"cve-2021-3828-nltk-redos-in-comparative-sentence-parsing","title":"PYSEC-2021-356 - nltk is vulnerable to Inefficient Regular Expression Complexity","severity":"low","exploited":false,"published_at":"2021-09-27T13:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-3828-nltk-redos-in-comparative-sentence-parsing"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}