CVE-2026-78680 NLTK before 3.10.3 Arbitrary Code Execution via Graphviz dot Binary

NLTK versions before 3.10.3 fail to use validated absolute paths when invoking the Graphviz dot binary in dependencygraph.dot2img and AlignedSent.reprsvg, allowing attackers to execute arbitrary code by placing a malicious dot binary in the search path or current working directory. Attackers can...