CVE-2025-2099 Regular Expression Denial of Service (ReDoS) in huggingface/transformers

A vulnerability in the preprocessstring function of the transformers.testingutils 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, leadin...

CVE-2025-2099: Inefficient Regular Expression Complexity

A vulnerability in the preprocessstring function of the transformers.testingutils 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, leadin...

Regular expression Denial of Service - ReDoS

Description The preprocessstring function in the transformers.testingutils module uses a regular expression to process code blocks in docstrings. This regular expression has the following structure: codeblockpattern = r"?:python|py\s\n\s ?:.?\n?.?" The segment ?:.?\n?.? contains nested quantifier...