Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-54xp-3ww7-6wjg
Advisory ID github_osv/GHSA-54xp-3ww7-6wjg
Aliases
Summary Duplicate Advisory: Uncontrolled search path when invoking the Graphviz 'dot' binary (CWE-426/CWE-427) ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-6hwm-xvph-95vm. This link is maintained to preserve external references. ## Original 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.
Status Published
Exploitability 0.5
Weighted Severity 7.7
Risk 3.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-426 Untrusted Search Path
System Score Found at
cvssv3.1 7.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-54xp-3ww7-6wjg/GHSA-54xp-3ww7-6wjg.json
cvssv4 8.5 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-54xp-3ww7-6wjg/GHSA-54xp-3ww7-6wjg.json
generic_textual HIGH
Reference id Reference type URL
https://github.com/nltk/nltk/security/advisories/GHSA-6hwm-xvph-95vm
https://www.vulncheck.com/advisories/nltk-before-arbitrary-code-execution-via-graphviz-dot-binary
CVE-2026-78680 https://nvd.nist.gov/vuln/detail/CVE-2026-78680
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-54xp-3ww7-6wjg/GHSA-54xp-3ww7-6wjg.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-54xp-3ww7-6wjg/GHSA-54xp-3ww7-6wjg.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.