Bugs in llama_index_core

[winters0x64]

Hello all, as per the updated SECURITY.md I have submitted two bug reports, Could any of the maintainers have a look at that, It's an algorithmic complexity vulnerability which is in scope as per the updated security policy.

Report 1: https://huntr.com/bounties/4c57a5d8-9ae5-4df9-97d7-e78d17400a61
Report 2: https://huntr.com/bounties/df914f07-3e79-4137-9773-cce9365bd78f

Thanks.