World-Writable NLTK Cache Directory Vulnerability in run-llama/llama_index

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-7707
StatePUBLISHED
Assigner@huntr_ai
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-13 17:15:35 UTC
Updated2026-10-08 12:10:00 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001860000 probability, percentile 0.075220000 (date 2026-10-08)

Problem Types: CWE-377 | CWE-377 CWE-377 Insecure Temporary File

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.0[email protected]Secondary7.1HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.0CNADECLARED7.1HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Llamaindex Llamaindex All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Run-llama Run-llama/llama Index affected unspecified v0.13.0 custom Not specified

References

ReferenceSourceLinkTags
github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69... [email protected] github.com Patch
huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803 [email protected] huntr.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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