Link following in Natural Language Toolkit - #VU141415
Published: August 11, 2026
Vulnerability identifier: #VU141415
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper link resolution before file access in FramenetCorpusReader when resolving corpus file paths through symlinks. A remote attacker can place a symlink inside a corpus subdirectory and invoke a normal public API call to disclose sensitive information.
Exploitation requires a tampered or shared corpus directory, and no user interaction is required.
Affected software
Natural Language Toolkit
Remediation
Install security update from vendor's website.
Natural Language Toolkit - update to 3.10.2