CVEvulnerability

CVE-2026-70626

8.6 HIGH Published 2026-08-22 Modified 2026-10-14 Official page ↗
Status
Analyzed
Published
2026-08-22
Last modified
2026-10-14
Assigner
[email protected]
CVSS 4.0 ([email protected])
8.6 HIGH — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/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
CVSS 3.1 ([email protected])
6.2 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-59

Description

NLTK versions before 3.9.4 contain a symlink escape vulnerability in CorpusReader.open() that allows local attackers to read arbitrary files outside the corpus root. The vulnerability exists because path validation is lexical and does not account for symlink resolution, enabling attackers to place symlinks inside the corpus root to access files outside the intended boundary.

Affected configurations

• nltk nltk (< 3.9.4)

Related

Weakness · CWE (1)

  • CWE-59 Improper Link Resolution Before File Access weakness

References