Detections
Analytics

Echo: nltk: security update to 3.9.4

medium Tenable Self-Hosted Container Security Plugin ID 465350

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials
 supporting research and development in Natural Language Processing. In versions 3.9.3 and prior,
 `nltk.app.wordnet_app` contains a reflected cross-site scripting issue in the `lookup_...` route. A
 crafted `lookup_<payload>` URL can inject arbitrary HTML/JavaScript into the response page because
 attacker-controlled `word` data is reflected into HTML without escaping. This impacts users running the
 local WordNet Browser server and can lead to script execution in the browser origin of that application.
 Commit 1c3f799607eeb088cab2491dcf806ae83c29ad8f fixes the issue. (CVE-2026-33230)

Solution

Update the nltk library and its related packages to version 3.9.4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-33230

Plugin Details

Severity: Medium

ID: 465350

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.42

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-33230

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/7/2026

Vulnerability Publication Date: 3/18/2026

Reference Information

CVE: CVE-2026-33230