Medium
Uncontrolled Memory Consumption in run-llama/llama_index
Type: advisorySources: OSV
The `SimpleDirectoryReader` component in `llama_index.core` version 0.12.23 suffers from uncontrolled memory consumption due to a resource management flaw. The vulnerability arises because the user-specified file limit (`num_files_limit`) is applied after all files in a directory are loaded into memory. This can lead to memory exhaustion and degraded performance, particularly in environments with limited resources. The issue is resolved in version 0.12.41.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-6208
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 01:48 UTC · Revision 1
Source evidence
Uncontrolled Memory Consumption in run-llama/llama_index
core-osv · Original sourcePublished 2 Feb 2026, 10:36 UTC
The `SimpleDirectoryReader` component in `llama_index.core` version 0.12.23 suffers from uncontrolled memory consumption due to a resource management flaw. The vulnerability arises because the user-specified file limit (`num_files_limit`) is applied after all files in a directory are loaded into memory. This can lead to memory exhaustion and degraded performance, particularly in environments with limited resources. The issue is resolved in version 0.12.41.
osv:CVE-2025-6208
Complete source record
{
"id": "4b8b496ba36d9436b4c71344fe171e2555f5f6dd80ab56a50c02615df1222240",
"url": "https://osv.dev/vulnerability/CVE-2025-6208",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Uncontrolled Memory Consumption in run-llama/llama_index",
"summary": "The `SimpleDirectoryReader` component in `llama_index.core` version 0.12.23 suffers from uncontrolled memory consumption due to a resource management flaw. The vulnerability arises because the user-specified file limit (`num_files_limit`) is applied after all files in a directory are loaded into memory. This can lead to memory exhaustion and degraded performance, particularly in environments with limited resources. The issue is resolved in version 0.12.41.",
"evidence": "osv:CVE-2025-6208",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-6208",
"aliases": [
"CVE-2025-6208",
"GHSA-488g-hw5f-x29p",
"PYSEC-2026-1560"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6208.json"
}
}
],
"modified": "2026-10-28T02:30:32.321298535Z",
"provider": "osv",
"references": [
"https://huntr.com/bounties/7d722bb6-6567-4608-8b23-f95048d7605a",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6208.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-6208",
"https://github.com/run-llama/llama_index/commit/53614e2f7913c0e86b58add9470b3c900b6c60b2"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6208.json"
}
},
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 499489,
"published_at": "2026-02-02T10:36:23.033+00:00"
}