HIGHCVSS 7.8Vulnerability
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._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.
Properties
- summary
- NLTK: Uncontrolled search path when invoking the Graphviz 'dot' binary
- severity
- HIGH
- epss_score
- 0.00177
- cvss_severity
- HIGH
- cvss_score
- 7.8
- retrieved_at
- 2026-10-17T06:48:26+00:00
- ghsa_published
- 2026-09-01T20:27:20Z
- source_url
- https://github.com/advisories/GHSA-6hwm-xvph-95vm
- ghsa_updated
- 2026-09-01T20:27:21Z
- ghsa_id
- GHSA-6hwm-xvph-95vm
- score
- 7.8
- last_source
- FIRST EPSS
- cve_id
- CVE-2026-78680
- cvss_vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- signal_observed_at
- 2026-09-11T17:55:57+00:00
- is_ghsa_only
- false
- vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-08-25T02:16:52.607
- last_modified
- 2026-09-23T18:14:58.577
- epss_percentile
- 0.06771
Related Entities (7)
DESCRIBED_BY (1)
→[Source]NVD
ENRICHED_BY (1)
→[Source]FIRST EPSS
VULNERABLE_TO (1)
←[Software]pip/nltk
AFFECTS (1)
→[Software]pip/nltk
HAS_WEAKNESS (2)
→[Weakness]Uncontrolled Search Path Element
→[Weakness]Untrusted Search Path
REPORTED_BY (1)
→[Source]GitHub Advisory Database
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