This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-79657 →

DEBIAN-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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 nltk

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 nltk

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 nltk

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.3-1"}]}]

References

advisory security-tracker.debian.org