{"id":"CVE-2024-12704","aliases":["GHSA-j3wr-m6xh-64hg","PYSEC-2026-1563"],"title":"LlamaIndex Improper Handling of Exceptional Conditions vulnerability","summary":"LlamaIndex Improper Handling of Exceptional Conditions vulnerability","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"llama-index-core","product":"llama-index-core","ecosystem":"pip","affected":["llama-index-core < 0.12.6"],"patched":["llama-index-core 0.12.6"],"published":"2025-03-20","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-j3wr-m6xh-64hg","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-12704"},{"url":"https://github.com/run-llama/llama_index/commit/d1ecfb77578d089cbe66728f18f635c09aa32a05"},{"url":"https://github.com/run-llama/llama_index"},{"url":"https://huntr.com/bounties/a0b638fd-21c6-4ba7-b381-6ab98472a02a"}],"tags":["osv","pip"],"epss":0.00815,"epssPercentile":0.55553,"ingestedAt":"2026-07-08T18:25:50.556Z","slug":"CVE-2024-12704","body":"## Overview\n\nA 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.\n\n## Affected packages\n\n- `llama-index-core < 0.12.6`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `llama-index-core 0.12.6`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}