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Advisories.
LlamaIndexPYSEC-2025-252

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

Medium6.2CVE-2025-6210 · Published Jul 7, 2025 · updated Jul 13, 2026

Source advisory

Affected versions

PackageAffectedFixed in
llama-index
PyPI
< 0.5.20.5.2
Details and references

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.

CVSS 3.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity from
the CVSS score
Also known as
CVE-2025-6210, GHSA-3j8r-jf9w-5cmh, PYSEC-2026-1567

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