Disclosure summary
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.
Source-reported weakness categories
CWE-377
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-7707
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| llamaindex | llamaindex | * {"versionStartIncluding":"0.12.33","versionEndExcluding":"0.13.0"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Patch
- huntr.com — Exploit, Third Party Advisory
PUBLISHED 2025-10-13T13:15:35-04:00
MODIFIED 2026-10-08T08:10:00-04:00
INGESTED 2026-10-08T12:30:42-04:00