Detections
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Echo: nltk: security update to 3.9.4

high Tenable Self-Hosted Container Security Plugin ID 472275

Description

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

 - In nltk/nltk versions 3.9.3 and earlier, five Stanford interface classes (StanfordPOSTagger,
 StanfordNERTagger, StanfordParser, StanfordDependencyParser, and StanfordNeuralDependencyParser) are
 vulnerable to untrusted JAR code execution. These classes accept user-controllable JAR paths and execute
 them via the `java()` function, which invokes `subprocess.Popen()` without integrity verification. This
 vulnerability is identical to CVE-2026-0848, which was fixed for StanfordSegmenter by adding SHA256
 verification. However, the fix was not applied to these additional classes, leaving them susceptible to
 arbitrary code execution when loading untrusted JAR files. (CVE-2026-12252)

Solution

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

See Also

https://advisory.echohq.com/cve/CVE-2026-12252

Plugin Details

Severity: High

ID: 472275

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.08

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-12252

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/3/2026

Vulnerability Publication Date: 7/4/2026

Reference Information

CVE: CVE-2026-12252