{"apiVersion":"1.0","identifier":"CVE-2026-79657","description":"NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust entire module namespaces instead of specific safe callables. Attackers can craft malicious pickle payloads invoking dangerous in-namespace functions like ReppTokenizer._execute and numpy.f2py.crackfortran.myeval through pickle REDUCE to execute arbitrary commands during model or tokenizer artifact loading.","publishedAt":"2026-08-25T12:16:28","lastModifiedAt":"2026-08-25T16:17:27","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79657","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.01166,"riskScore":1.08,"affectedProduct":"NLTK","affectedVersions":"<3.10.3","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-79657","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-79657","en":"https://www.redsauce.net/en/cves/CVE-2026-79657","fr":"https://www.redsauce.net/fr/cves/CVE-2026-79657","pt":"https://www.redsauce.net/pt/cves/CVE-2026-79657","de":"https://www.redsauce.net/de/cves/CVE-2026-79657","sk":"https://www.redsauce.net/sk/cves/CVE-2026-79657","el":"https://www.redsauce.net/el/cves/CVE-2026-79657"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-79657"}}