High severity8.6NVD Advisory· Published Aug 25, 2025· Updated Apr 15, 2026

CVE-2025-5302

Description

A denial of service vulnerability exists in the JSONReader component of the run-llama/llama_index repository, specifically in version v0.12.37. The vulnerability is caused by uncontrolled recursion when parsing deeply nested JSON files, which can lead to Python hitting its maximum recursion depth limit. This results in high resource consumption and potential crashes of the Python process. The issue is resolved in version 0.12.38.

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Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
llama-index-corePyPI	< 0.12.38	0.12.38

Affected products

Run Llama/Llama Indexreferences
ghsa-coords
pkg:pypi/llama-index-core
Range: < 0.12.38

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-7753-xrfw-ch36ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-5302ghsaADVISORY
github.com/run-llama/llama_index/commit/c032843a02ce38fd8f284b2aa5a37fd1c17ae635nvdWEB
huntr.com/bounties/70041b81-de9e-4046-8c0e-6ccd557048a6nvdWEB

News mentions

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cvss	0.559
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000