What is GHSA-vp9c-2pjm-8925?

GHSA-vp9c-2pjm-8925 is a security advisory published by GitHub Security Advisories with Critical severity. NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle...

Which CVE IDs does GHSA-vp9c-2pjm-8925 cover?

GHSA-vp9c-2pjm-8925 covers the following CVE IDs: CVE-2026-79657. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vp9c-2pjm-8925?

GHSA-vp9c-2pjm-8925 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-vp9c-2pjm-8925CriticalCVSS 9.8

NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle...

Vendor

GitHub Security Advisories

Published

August 25, 2026

Last Modified

August 25, 2026

🔗 CVE IDs covered (1)

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.

🔗 References (4)

https://github.com/nltk/nltk/security/advisories/GHSA-x99w-6fgc-pmfw
https://nvd.nist.gov/vuln/detail/CVE-2026-79657
https://www.vulncheck.com/advisories/nltk-before-3.10.3-remote-code-execution-via-unsafe-pickle-deserialization
https://github.com/advisories/GHSA-vp9c-2pjm-8925