CVE-2024-12704 — HIGH (CVSS 7.5) AI Security Vulnerability

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...

Full analysis pending. Showing NVD description excerpt.

Affected Systems

Package	Ecosystem	Vulnerable Range	Patched
llama-index-core	pip	< 0.12.6	`0.12.6`
llamaindex	pip	—	No patch

Severity & Risk

CVSS 3.1

7.5 / 10

EPSS

0.3%

chance of exploitation in 30 days

KEV Status

Not in KEV

Sophistication

N/A

Recommended Action

Patch available

Update llama-index-core to version 0.12.6

Compliance Impact

Compliance analysis pending. Sign in for full compliance mapping when available.

Technical Details

NVD Description

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.

Weaknesses (CWE)

CWE-755 Improper Handling of Exceptional Conditions Primary CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') Primary CWE-835

CVSS Vector

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

References

Timeline

Published

March 20, 2025

Last Modified

February 24, 2026

First Seen

March 20, 2025