Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-rcw8-9qrw-27m2
Advisory ID github_osv/GHSA-rcw8-9qrw-27m2
Aliases
Summary Duplicate Advisory: NLTK: Corpus Reader Sandbox Bypass ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-3gq4-3j92-5w49. This link is maintained to preserve external references. ## Original Description NLTK versions before 3.10.3 contain a path sandbox bypass vulnerability in corpus-reader constructors that allows attackers to read files outside the intended data root. Attackers can supply arbitrary corpus root paths to LinThesaurusCorpusReader and PanLexLiteCorpusReader constructors to access filesystem content and SQLite databases outside the pathsec sandbox boundary.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-73 External Control of File Name or Path
System Score Found at
cvssv3.1 8.2 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-rcw8-9qrw-27m2/GHSA-rcw8-9qrw-27m2.json
cvssv4 8.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-rcw8-9qrw-27m2/GHSA-rcw8-9qrw-27m2.json
generic_textual HIGH
Reference id Reference type URL
CVE-2026-79674 https://nvd.nist.gov/vuln/detail/CVE-2026-79674
GHSA-3gq4-3j92-5w49 Advisory https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49
nltk-path-traversal-via-corpus-reader-constructors Advisory https://www.vulncheck.com/advisories/nltk-path-traversal-via-corpus-reader-constructors
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-rcw8-9qrw-27m2/GHSA-rcw8-9qrw-27m2.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:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/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-rcw8-9qrw-27m2/GHSA-rcw8-9qrw-27m2.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.