What’s Vulnerable › Vulnerabilities

CVE-2025-6210: Hardlink-Based Path Traversal in run-llama/llama_index

• Severity: medium (CVSS 6.2 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-07 · updated 2026-10-18
• Weakness: CWE-22

Description

A vulnerability in the ObsidianReader class of the run-llama/llama_index repository, specifically in version 0.12.27, allows for hardlink-based path traversal. This flaw permits attackers to bypass path restrictions and access sensitive system files, such as /etc/passwd, by exploiting hardlinks. The vulnerability arises from inadequate handling of hardlinks in the load_data() method, where the security checks fail to differentiate between real files and hardlinks. This issue is resolved in version 0.5.2.

Affected products

• run-llama/llama_index: before 0.5.2 — fixed in 0.5.2

How to fix

Upgrade to a fixed version: run-llama/llama_index 0.5.2. Check the vendor advisory for mitigations.

References

• https://github.com/run-llama/llama_index/commit/a86c96ae0e662492eeb471b658ae849a93f628ff
• https://huntr.com/bounties/a654b322-a509-4448-a1f5-0f22850b4687

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