CVE-2026-79657
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
CRITICAL
9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust entire module namespaces instead of specific safe callables. Attackers can craft malicious pickle payloads invoking dangerous in-namespace functions like ReppTokenizer._execute and numpy.f2py.crackfortran.myeval through pickle REDUCE to execute arbitrary commands during model or tokenizer artifact loading.
502
Deserialization of Untrusted Data
DraftCommon Consequences
Security Scopes Affected:
Integrity
Availability
Other
Potential Impacts:
Modify Application Data
Unexpected State
Dos: Resource Consumption (Cpu)
Varies By Context
Applicable Platforms
Languages:
Java, Ruby, PHP, Python, JavaScript
Technologies:
Not Technology-Specific, ICS/OT, AI/ML
https://github.com/nltk/nltk/security/advisories/GHSA-x99w-6fgc-pmfw
https://www.vulncheck.com/advisories/nltk-before-3.10.3-remote-code-execution-v…