CRITICAL 9.3 NVD
CVE-2026-79657
NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust entire module namespaces instead of specific
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.
References
- https://github.com/nltk/nltk/security/advisories/GHSA-x99w-6fgc-pmfw
- https://www.vulncheck.com/advisories/nltk-before-3.10.3-remote-code-execution-via-unsafe-p
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-08-25 via NVD.
Risk Timeline
CVE Disclosed2026-08-25 · -1 days ago
Remediation Resources
vulnfeed aggregates 12116 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.