CVE-2026-78680 | BDVDB-2026-364487 Detail

Description#

NLTK versions before 3.10.3 fail to use validated absolute paths when invoking the Graphviz dot binary in dependencygraph.dot2img and AlignedSent._repr_svg_, allowing attackers to execute arbitrary code by placing a malicious dot binary in the search path or current working directory. Attackers can exploit bare-name binary resolution on Windows via the current working directory or on Unix-like systems via relative PATH entries to execute their binary instead of the legitimate Graphviz tool.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12026-08-25Record published in the CVE List.