CVE-2026-63310

Published: Ago 22, 2026 Last Modified: Ago 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 7,1
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: high

Description

AI Translation Available

NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader module. Attackers can perform man-in-the-middle attacks or DNS poisoning to inject malicious package contents that are extracted without validation.

494

Download of Code Without Integrity Check

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality Other
Potential Impacts:
Execute Unauthorized Code Or Commands Alter Execution Logic Other
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
https://github.com/nltk/nltk/security/advisories/GHSA-5wp5-…
https://github.com/nltk/nltk/security/advisories/GHSA-5wp5-5229-5g6q
https://www.vulncheck.com/advisories/nltk-before-missing-po…
https://www.vulncheck.com/advisories/nltk-before-missing-post-download-integrit…