CVE-2025-7707

The llama_index library version 0.12.33 sets the NLTK data directory to a subdirectory of the codebase by default, which is world-writable in multi-user environments. This configuration allows local users to overwrite, delete, or corrupt NLTK data files, leading to potential denial of service, data tampering, or privilege escalation. The vulnerability arises from the use of a shared cache directory instead of a user-specific one, making it susceptible to local data tampering and denial of service.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4	Patch
https://huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:llamaindex:llamaindex:*:*:*:*:*:*:*:*

History

21 Oct 2025, 14:48

Type	Values Removed	Values Added
First Time		Llamaindex Llamaindex llamaindex
CVSS	v2 : ~~unknown~~ v3 : ~~7.1~~	v2 : unknown v3 : 7.8
CPE		cpe:2.3:a:llamaindex:llamaindex::::::::
References	~~() https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4 -~~	() https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4 - Patch
References	~~() https://huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803 -~~	() https://huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803 - Exploit, Third Party Advisory

13 Oct 2025, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-13 17:15

Updated : 2025-10-21 14:48

NVD link : CVE-2025-7707

Mitre link : CVE-2025-7707

CVE.ORG link : CVE-2025-7707

JSON object : View

Products Affected

llamaindex

llamaindex

CWE

CWE-377

Insecure Temporary File

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