CVE-2025-6210: llamaindex Path Traversal

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.

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CVSS v3.1 Score

6.2

MEDIUM

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

Weakness Type (CWE)

CWE-22 Path Traversal

Affected Products

Vendor	Product	Versions
llamaindex	llamaindex	< 0.5.2

References

Advisories & Patches

https://github.com/run-llama/llama_index/commit/a86c96ae0e662492eeb471b658ae849a93f628ff

Exploits

https://huntr.com/bounties/a654b322-a509-4448-a1f5-0f22850b4687

Frequently Asked Questions

What is CVE-2025-6210? +

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. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2025-6210? +

CVE-2025-6210 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-6210? +

CVE-2025-6210 affects products from llamaindex, specifically: llamaindex. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6210? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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