CVEs-PoC/2025/CVE-2025-2099.md

CVE-2025-2099

Description

A vulnerability in the preprocess_string() function of the transformers.testing_utils module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack. The regular expression used to process code blocks in docstrings contains nested quantifiers, leading to exponential backtracking when processing input with a large number of newline characters. An attacker can exploit this by providing a specially crafted payload, causing high CPU usage and potential application downtime, effectively resulting in a Denial of Service (DoS) scenario.

POC

Reference

No PoCs from references.

Github

• https://github.com/ARPSyndicate/cve-scores
• https://github.com/Kwaai-AI-Lab/OpenAI-Petal
• https://github.com/fkie-cad/nvd-json-data-feeds