| ID |
CVE-2026-12259
|
| Sažetak |
In nltk version 3.9.4, the `nltk.downloader.Downloader._download_package()` function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to 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. The vulnerability can result in malicious corpus or model content being trusted by downstream users or applications. |
| Reference |
|
| CVSS |
| Base: | 5.3 |
| Impact: | 3.6 |
| Exploitability: | 1.6 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| NETWORK |
HIGH |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| NONE |
HIGH |
NONE |
|
| CVSS vektor |
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| Zadnje važnije ažuriranje |
03-08-2026 - 16:16 |
| Objavljeno |
03-08-2026 - 08:17 |
