CVE-2024-12720 Information

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was identified in the huggingface/transformers library specifically in the file tokenization_nougat_fast.py. The vulnerability occurs in the post_process_single() function where a regular expression processes specially crafted input. The issue stems from the regex exhibiting exponential time complexity under certain conditions leading to excessive backtracking. This can result in significantly high CPU usage and potential application downtime effectively creating a Denial of Service (DoS) scenario. The affected version is v4.46.3 (latest).

Reference

https://github.com/huggingface/transformers/commit/deac971c469bcbb182c2e52da0b82fb3bf54cccf https://huntr.com/bounties/4bed1214-7835-4252-a853-22bbad891f98 https://huntr.com/bounties/4bed1214-7835-4252-a853-22bbad891f98