PYSEC-2026-3868 NLTK: Uncontrolled search path when invoking the Graphviz 'dot' binary

Two NLTK sites executed the Graphviz dot program by bare name, so process creation resolved it via the search path — and on Windows via the current working directory — rather than a validated absolute location. An attacker who can place a file named dot where resolution looks the CWD on Windows, ...

Arbitrary Code Execution

NLTK is vulnerable to arbitrary code execution. The vulnerability is due to the use of unvalidated relative or bare-name paths when invoking the Graphviz dot binary, which allows an attacker to execute arbitrary code by placing a malicious dot executable in the current working directory or in a...

EUVD-2026-65226

NLTK: Uncontrolled search path when invoking the Graphviz 'dot' binary...

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...

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...

CVE-2026-78680

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...

Linux Distros Unpatched Vulnerability : CVE-2026-78680

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK versions before 3.10.3 fail to use validated absolute paths when invoking the Graphviz dot binary in dependencygraph.dot2img and AlignedSent.reprsvg,...