Detections
Analytics

Echo: nltk: security update to 3.10.0

low Tenable Cloud Security Plugin ID 472828

Description

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

 - A Server-Side Request Forgery (SSRF) vulnerability exists in nltk/nltk versions 3.9.4 and the current
 develop branch. The `nltk.pathsec.validate_network_url()` function, intended to prevent SSRF by rejecting
 internal network addresses, fails to reject IPs in the RFC 6598 shared address space (`100.64.0.0/10`).
 This occurs because Python's `ipaddress` module does not classify such addresses as `is_private` or
 `is_global`, and the current guard only checks `is_private` and a few explicit categories. An attacker who
 can influence a URL passed to NLTK's network-loading helpers can exploit this vulnerability to make a
 strict-mode application send requests to shared-address-space hosts, potentially exposing non-public
 infrastructure reachable from the application host. The impact is limited to SSRF-style confidentiality
 exposure, with no code execution claimed. (CVE-2026-12372)

Solution

Update the nltk library and its related packages to version 3.10.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-12372

Plugin Details

Severity: Low

ID: 472828

Version: Revision 1.1

Type: Local

Published: 10/5/2026

Updated: 10/5/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

CVSS Score Source: CVE-2026-12372

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/4/2026

Vulnerability Publication Date: 8/9/2026

Reference Information

CVE: CVE-2026-12372