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.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Nltk |
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References
History
Tue, 25 Aug 2026 02:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | NLTK before 3.10.3 Arbitrary Code Execution via Graphviz dot Binary | |
| First Time appeared |
Nltk
Nltk nltk |
|
| Weaknesses | CWE-426 | |
| CPEs | cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Nltk
Nltk nltk |
|
| References |
| |
| Metrics |
cvssV3_1
|
MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-25T01:30:37.044Z
Reserved: 2026-08-25T01:17:12.262Z
Link: CVE-2026-78680
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-25T02:16:52.607
Modified: 2026-08-25T02:16:52.607
Link: CVE-2026-78680
Redhat
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OpenCVE Enrichment
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