CVE-2026-126302

LOW 3.3

NLTK 3.9.4 before 3.10.4 Symlink Sandbox Escape via chat80.sql_query

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

NLTK from 3.9.4 before 3.10.4 contains a symlink following vulnerability in nltk.sem.chat80.sql_query() that bypasses the pathsec data-root sandbox containment check. Attackers who can write into a trusted NLTK data root can plant a symbolic link to read SQLite databases outside the sandbox.

CWE	CWE-59
Vendor	nltk
Product	nltk
Published	Nov 13, 2026

Stay Ahead of the Next One

Get instant alerts for nltk nltk

Be the first to know when new low vulnerabilities affecting nltk nltk are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

nltk / nltk

3.9.4 < 3.10.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nltk/nltk/security/advisories/GHSA-xmfg-f9cm-w86q vulncheck.com: https://www.vulncheck.com/advisories/nltk-3.9.4-before-3.10.4-symlink-sandbox-escape-via-chat80-sql-query

Credits

🔍 manus-pi 🔍 manus-use