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CVE-2026-12259: nltk 3.9.4; +1 more affected products
CVE-2026-12259. CVSS 3.1 base score 6.5 (MEDIUM, NVD). EPSS 0.0014 (percentile 0.03008), scored 14-Oct-2026.
Affected technology
nltk · 3.9.4
nltk
nltk/nltk · unspecified through latest
nltk
Description’s affected range: version 3.9.4
Component: Not specified by the source
Function: writes
Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · User interaction required
What an attacker can do
An attacker can tamper with the package response body for `info.url` through a compromised mirror, malicious proxy, or other source-substitution condition, leading to the installation of attacker-controlled package bytes. NVD’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality and availability impact as none; integrity impact as high.
- CWE
- CWE-494
- CCR priority
- 26.0 /100 (P4)
- CVSS 3.1
- 6.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N · NVD
- EPSS
- 0.0014 · percentile 0.03008 · 2026-10-14
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-15 20:17:11.213245+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-12259.html