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High

LlamaIndex Improper Handling of Exceptional Conditions vulnerability

  • Disclosed: 20.03.2025
  • Updated: 11.10.2026 14:17

A vulnerability in the LangChainLLM class of the run-llama/llama_index repository, version v0.12.5, allows for a Denial of Service (DoS) attack. The stream_complete method executes the llm using a thread and retrieves the result via the get_response_gen method of the StreamingGeneratorCallbackHandler class. If the thread terminates abnormally before the _llm.predict is executed, there is no exception handling for this case, leading to an infinite loop in the get_response_gen function. This can be triggered by providing an input of an incorrect type, causing the thread to terminate and the process to continue running indefinitely.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) llama-index <= 0.12.5 no fix
Python (PyPI) llama-index-core < 0.12.6 0.12.6

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-755, CWE-835
Platform
Python (PyPI)
Package
llama-index, llama-index-core
Disclosed
20.03.2025
Updated
11.10.2026 14:17

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2025-244 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-j3wr-m6xh-64hg - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2026-1563 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: llama-index

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (22) in the archive
Total entries
22
First → latest
08.2023 01.2026
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 11
  • Medium 6

Disclosures per year

Severity:
  1. LlamaIndex (run-llama/llama_index) versions up to and including 0.12.2 contain an uncontrolled resource consumption vulnerability in the VannaPack VannaQueryEngine implementation. The custom_query() l
    High · 7.5 CVE-2024-58339 < 0.12.3 0.12.3
  2. LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The
    High · 7.8 CVE-2024-14021 < 0.11.7 0.11.7
  3. llama-index has Insecure Temporary File
    High · 7.1 CVE-2025-7707 < 0.13.0 0.13.0
  4. LlamaIndex vulnerable to Path Traversal attack through its encode_image function
    High · 7.5 CVE-2025-6209 >= 0.12.27, < 0.12.41 0.12.41
  5. LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser
    High · 7.5 CVE-2025-3225 >= 0.12.21, < 0.12.29 0.12.29
  6. LlamaIndex is vulnerable to Path Traversal attack through its ObsidianReader class
    High · 7.5 CVE-2025-3046 >= 0.12.23, < 0.12.28 0.12.28
  7. llama_index vulnerable to SQL Injection
    Critical · 9.8 CVE-2025-1793 < 0.12.28 0.12.28
  8. LlamaIndex DuckDBVectorStore vulnerable to SQL injection through ref_doc_id
    Critical · 9.8 CVE-2025-1750 >= 0.12.19, < 0.12.21 0.12.21
  9. LLama-Index CLI OS command injection vulnerability
    High · 7.8 CVE-2025-1753 <= 0.12.20 no fix
  10. LlamaIndex Vulnerable to Denial of Service (DoS)
    High · 7.5 CVE-2025-1752 >= 0.12.15, < 0.12.21 0.12.21
  11. LlamaIndex vulnerable to Creation of Temporary File in Directory with Insecure Permissions
    High · 7.1 CVE-2024-12911 < 0.12.3 0.12.3
  12. LlamaIndex Improper Handling of Exceptional Conditions vulnerability this entry
    High · 7.5 CVE-2024-12704 <= 0.12.5 no fix
  13. LlamaIndex includes an exec call for `import {cls_name}`
    Critical · 9.8 CVE-2024-45201 < 0.10.38 0.10.38
  14. RunGptLLM class in LlamaIndex has a command injection
    High · 8.8 CVE-2024-4181 >= 0.9.47, < 0.10.13 0.10.13
  15. LlamaIndex (aka llama_index) through 0.9.34 allows SQL injection via the Text-to-SQL feature in NLSQLTableQueryEngine, SQLTableRetrieverQueryEngine, NLSQLRetriever, RetrieverQueryEngine, and PGVectorS
    Critical · 9.8 CVE-2024-23751 < 0.9.35 0.9.35
  16. An issue in llama_index v.0.7.13 and before allows a remote attacker to execute arbitrary code via the `exec` parameter in PandasQueryEngine function.
    Critical · 9.8 CVE-2023-39662 < 0.7.14 0.7.14

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